diff --git a/assets/viarewind/data/mappings-1.8to1.7.10.nbt b/assets/viarewind/data/mappings-1.8to1.7.10.nbt
new file mode 100644
index 000000000..7fd43926f
Binary files /dev/null and b/assets/viarewind/data/mappings-1.8to1.7.10.nbt differ
diff --git a/assets/viarewind/data/mappings-1.9.4to1.8.nbt b/assets/viarewind/data/mappings-1.9.4to1.8.nbt
new file mode 100644
index 000000000..c894905d3
Binary files /dev/null and b/assets/viarewind/data/mappings-1.9.4to1.8.nbt differ
diff --git a/pumpkin-codegen/src/packet.rs b/pumpkin-codegen/src/packet.rs
index 70b187c86..8d4e5cce5 100644
--- a/pumpkin-codegen/src/packet.rs
+++ b/pumpkin-codegen/src/packet.rs
@@ -59,7 +59,7 @@ pub(crate) fn build() -> TokenStream {
         use pumpkin_util::version::JavaMinecraftVersion;
 
         pub const CURRENT_MC_VERSION: JavaMinecraftVersion = #LATEST_VERSION;
-        pub const LOWEST_SUPPORTED_MC_VERSION: JavaMinecraftVersion = JavaMinecraftVersion::V_1_20_5;
+        pub const LOWEST_SUPPORTED_MC_VERSION: JavaMinecraftVersion = JavaMinecraftVersion::V_1_7_2;
 
         #packet_id_struct
 
diff --git a/pumpkin-codegen/src/remap/block_state.rs b/pumpkin-codegen/src/remap/block_state.rs
index ca9a6173a..b1fe004c0 100644
--- a/pumpkin-codegen/src/remap/block_state.rs
+++ b/pumpkin-codegen/src/remap/block_state.rs
@@ -7,10 +7,30 @@ use crate::version::JavaMinecraftVersion;
 /// Generates the `TokenStream` for per-version block-state remap tables and the
 /// `remap_block_state_for_version` function.
 pub fn build() -> TokenStream {
+    let node_1_7_2 = MappingNode {
+        version: JavaMinecraftVersion::V_1_7_2,
+        value: "../assets/viabackwards/data/mappings-1.7.6to1.7.2.nbt",
+        child: None,
+    };
+    let node_1_7_6 = MappingNode {
+        version: JavaMinecraftVersion::V_1_7_6,
+        value: "../assets/viarewind/data/mappings-1.8to1.7.10.nbt",
+        child: Some(&node_1_7_2),
+    };
+    let node_1_8 = MappingNode {
+        version: JavaMinecraftVersion::V_1_8,
+        value: "../assets/viarewind/data/mappings-1.9.4to1.8.nbt",
+        child: Some(&node_1_7_6),
+    };
+    let node_1_9 = MappingNode {
+        version: JavaMinecraftVersion::V_1_9,
+        value: "../assets/viabackwards/data/mappings-1.10to1.9.4.nbt",
+        child: Some(&node_1_8),
+    };
     let node_1_10 = MappingNode {
         version: JavaMinecraftVersion::V_1_10,
         value: "../assets/viabackwards/data/mappings-1.11to1.10.nbt",
-        child: None,
+        child: Some(&node_1_9),
     };
     let node_1_11 = MappingNode {
         version: JavaMinecraftVersion::V_1_11,
diff --git a/pumpkin-codegen/src/remap/entity_id.rs b/pumpkin-codegen/src/remap/entity_id.rs
index 03dbfcb2c..578e0fc74 100644
--- a/pumpkin-codegen/src/remap/entity_id.rs
+++ b/pumpkin-codegen/src/remap/entity_id.rs
@@ -7,10 +7,30 @@ use crate::version::JavaMinecraftVersion;
 /// Generates the `TokenStream` for per-version entity ID remap tables and the
 /// `remap_entity_id_for_version` function.
 pub fn build() -> TokenStream {
+    let node_1_7_2 = MappingNode {
+        version: JavaMinecraftVersion::V_1_7_2,
+        value: "../assets/viabackwards/data/mappings-1.7.6to1.7.2.nbt",
+        child: None,
+    };
+    let node_1_7_6 = MappingNode {
+        version: JavaMinecraftVersion::V_1_7_6,
+        value: "../assets/viarewind/data/mappings-1.8to1.7.10.nbt",
+        child: Some(&node_1_7_2),
+    };
+    let node_1_8 = MappingNode {
+        version: JavaMinecraftVersion::V_1_8,
+        value: "../assets/viarewind/data/mappings-1.9.4to1.8.nbt",
+        child: Some(&node_1_7_6),
+    };
+    let node_1_9 = MappingNode {
+        version: JavaMinecraftVersion::V_1_9,
+        value: "../assets/viabackwards/data/mappings-1.10to1.9.4.nbt",
+        child: Some(&node_1_8),
+    };
     let node_1_10 = MappingNode {
         version: JavaMinecraftVersion::V_1_10,
         value: "../assets/viabackwards/data/mappings-1.11to1.10.nbt",
-        child: None,
+        child: Some(&node_1_9),
     };
     let node_1_11 = MappingNode {
         version: JavaMinecraftVersion::V_1_11,
diff --git a/pumpkin-codegen/src/remap/item_id.rs b/pumpkin-codegen/src/remap/item_id.rs
index 0fb334360..196062598 100644
--- a/pumpkin-codegen/src/remap/item_id.rs
+++ b/pumpkin-codegen/src/remap/item_id.rs
@@ -9,10 +9,30 @@ use crate::version::JavaMinecraftVersion;
 pub fn build() -> TokenStream {
     // ViaBackwards mappings go new → old (26.1 → 1.21.11 → ... → 1.20.5)
     // This is the correct direction for a new server sending to old clients.
+    let node_1_7_2 = MappingNode {
+        version: JavaMinecraftVersion::V_1_7_2,
+        value: "../assets/viabackwards/data/mappings-1.7.6to1.7.2.nbt",
+        child: None,
+    };
+    let node_1_7_6 = MappingNode {
+        version: JavaMinecraftVersion::V_1_7_6,
+        value: "../assets/viarewind/data/mappings-1.8to1.7.10.nbt",
+        child: Some(&node_1_7_2),
+    };
+    let node_1_8 = MappingNode {
+        version: JavaMinecraftVersion::V_1_8,
+        value: "../assets/viarewind/data/mappings-1.9.4to1.8.nbt",
+        child: Some(&node_1_7_6),
+    };
+    let node_1_9 = MappingNode {
+        version: JavaMinecraftVersion::V_1_9,
+        value: "../assets/viabackwards/data/mappings-1.10to1.9.4.nbt",
+        child: Some(&node_1_8),
+    };
     let node_1_10 = MappingNode {
         version: JavaMinecraftVersion::V_1_10,
         value: "../assets/viabackwards/data/mappings-1.11to1.10.nbt",
-        child: None,
+        child: Some(&node_1_9),
     };
     let node_1_11 = MappingNode {
         version: JavaMinecraftVersion::V_1_11,
diff --git a/pumpkin-codegen/src/remap/particle_id.rs b/pumpkin-codegen/src/remap/particle_id.rs
index ed096770d..bc0fd660b 100644
--- a/pumpkin-codegen/src/remap/particle_id.rs
+++ b/pumpkin-codegen/src/remap/particle_id.rs
@@ -7,10 +7,30 @@ use crate::version::JavaMinecraftVersion;
 /// Generates the `TokenStream` for per-version particle ID remap tables and the
 /// `remap_particle_id_for_version` function.
 pub fn build() -> TokenStream {
+    let node_1_7_2 = MappingNode {
+        version: JavaMinecraftVersion::V_1_7_2,
+        value: "../assets/viabackwards/data/mappings-1.7.6to1.7.2.nbt",
+        child: None,
+    };
+    let node_1_7_6 = MappingNode {
+        version: JavaMinecraftVersion::V_1_7_6,
+        value: "../assets/viarewind/data/mappings-1.8to1.7.10.nbt",
+        child: Some(&node_1_7_2),
+    };
+    let node_1_8 = MappingNode {
+        version: JavaMinecraftVersion::V_1_8,
+        value: "../assets/viarewind/data/mappings-1.9.4to1.8.nbt",
+        child: Some(&node_1_7_6),
+    };
+    let node_1_9 = MappingNode {
+        version: JavaMinecraftVersion::V_1_9,
+        value: "../assets/viabackwards/data/mappings-1.10to1.9.4.nbt",
+        child: Some(&node_1_8),
+    };
     let node_1_10 = MappingNode {
         version: JavaMinecraftVersion::V_1_10,
         value: "../assets/viabackwards/data/mappings-1.11to1.10.nbt",
-        child: None,
+        child: Some(&node_1_9),
     };
     let node_1_11 = MappingNode {
         version: JavaMinecraftVersion::V_1_11,
diff --git a/pumpkin-codegen/src/remap/sound_id.rs b/pumpkin-codegen/src/remap/sound_id.rs
index 472b7c87a..cc9af13e4 100644
--- a/pumpkin-codegen/src/remap/sound_id.rs
+++ b/pumpkin-codegen/src/remap/sound_id.rs
@@ -7,10 +7,30 @@ use crate::version::JavaMinecraftVersion;
 /// Generates the `TokenStream` for per-version sound ID remap tables and the
 /// `remap_sound_id_for_version` function.
 pub fn build() -> TokenStream {
+    let node_1_7_2 = MappingNode {
+        version: JavaMinecraftVersion::V_1_7_2,
+        value: "../assets/viabackwards/data/mappings-1.7.6to1.7.2.nbt",
+        child: None,
+    };
+    let node_1_7_6 = MappingNode {
+        version: JavaMinecraftVersion::V_1_7_6,
+        value: "../assets/viarewind/data/mappings-1.8to1.7.10.nbt",
+        child: Some(&node_1_7_2),
+    };
+    let node_1_8 = MappingNode {
+        version: JavaMinecraftVersion::V_1_8,
+        value: "../assets/viarewind/data/mappings-1.9.4to1.8.nbt",
+        child: Some(&node_1_7_6),
+    };
+    let node_1_9 = MappingNode {
+        version: JavaMinecraftVersion::V_1_9,
+        value: "../assets/viabackwards/data/mappings-1.10to1.9.4.nbt",
+        child: Some(&node_1_8),
+    };
     let node_1_10 = MappingNode {
         version: JavaMinecraftVersion::V_1_10,
         value: "../assets/viabackwards/data/mappings-1.11to1.10.nbt",
-        child: None,
+        child: Some(&node_1_9),
     };
     let node_1_11 = MappingNode {
         version: JavaMinecraftVersion::V_1_11,
diff --git a/pumpkin-protocol/src/java/client/config/feature_flags.rs b/pumpkin-protocol/src/java/client/config/feature_flags.rs
new file mode 100644
index 000000000..06b8c5078
--- /dev/null
+++ b/pumpkin-protocol/src/java/client/config/feature_flags.rs
@@ -0,0 +1,28 @@
+use pumpkin_data::packet::clientbound::CONFIG_UPDATE_ENABLED_FEATURES;
+use pumpkin_macros::java_packet;
+use pumpkin_util::{resource_location::ResourceLocation, version::JavaMinecraftVersion};
+
+use crate::{ClientPacket, ser::NetworkWriteExt};
+
+#[java_packet(CONFIG_UPDATE_ENABLED_FEATURES)]
+pub struct CFeatureFlags<'a> {
+    pub features: &'a [ResourceLocation],
+}
+
+impl<'a> CFeatureFlags<'a> {
+    #[must_use]
+    pub const fn new(features: &'a [ResourceLocation]) -> Self {
+        Self { features }
+    }
+}
+
+impl ClientPacket for CFeatureFlags<'_> {
+    fn write_packet_data(
+        &self,
+        mut write: impl std::io::Write,
+        _version: &JavaMinecraftVersion,
+    ) -> Result<(), crate::ser::WritingError> {
+        write.write_list(self.features, |write, feature| write.write_string(feature))?;
+        Ok(())
+    }
+}
diff --git a/pumpkin-protocol/src/java/client/config/finish_config.rs b/pumpkin-protocol/src/java/client/config/finish_config.rs
index 2a0893679..56f348b65 100644
--- a/pumpkin-protocol/src/java/client/config/finish_config.rs
+++ b/pumpkin-protocol/src/java/client/config/finish_config.rs
@@ -16,3 +16,12 @@ impl ClientPacket for CFinishConfig {
         Ok(())
     }
 }
+
+impl<'a> crate::ServerPacket<'a> for CFinishConfig {
+    fn read(
+        _bytebuf: &mut &'a [u8],
+        _version: &JavaMinecraftVersion,
+    ) -> Result<Self, crate::ser::ReadingError> {
+        Ok(Self)
+    }
+}
diff --git a/pumpkin-protocol/src/java/client/config/mod.rs b/pumpkin-protocol/src/java/client/config/mod.rs
index 7f1e32ed0..808f25dba 100644
--- a/pumpkin-protocol/src/java/client/config/mod.rs
+++ b/pumpkin-protocol/src/java/client/config/mod.rs
@@ -2,6 +2,7 @@ mod add_resource_pack;
 mod clear_dialog;
 mod config_disconnect;
 mod cookie_request;
+mod feature_flags;
 mod finish_config;
 mod known_packs;
 mod plugin_message;
@@ -16,6 +17,7 @@ pub use add_resource_pack::*;
 pub use clear_dialog::*;
 pub use config_disconnect::*;
 pub use cookie_request::*;
+pub use feature_flags::*;
 pub use finish_config::*;
 pub use known_packs::*;
 pub use plugin_message::*;
diff --git a/pumpkin-protocol/src/java/client/login/encryption_request.rs b/pumpkin-protocol/src/java/client/login/encryption_request.rs
index 90a0380ca..53a2c528b 100644
--- a/pumpkin-protocol/src/java/client/login/encryption_request.rs
+++ b/pumpkin-protocol/src/java/client/login/encryption_request.rs
@@ -46,14 +46,16 @@ impl ClientPacket for CEncryptionRequest<'_> {
     fn write_packet_data(
         &self,
         mut write: impl std::io::Write,
-        _version: &JavaMinecraftVersion,
+        version: &JavaMinecraftVersion,
     ) -> Result<(), crate::ser::WritingError> {
         write.write_string(self.server_id)?;
         write.write_var_int(&crate::VarInt(self.public_key.len() as i32))?;
         write.write_all(self.public_key)?;
         write.write_var_int(&crate::VarInt(self.verify_token.len() as i32))?;
         write.write_all(self.verify_token)?;
-        write.write_bool(self.should_authenticate)?;
+        if version >= &JavaMinecraftVersion::V_1_19 {
+            write.write_bool(self.should_authenticate)?;
+        }
         Ok(())
     }
 }
diff --git a/pumpkin-protocol/src/java/client/login/login_disconnect.rs b/pumpkin-protocol/src/java/client/login/login_disconnect.rs
index 484f81a12..d19648396 100644
--- a/pumpkin-protocol/src/java/client/login/login_disconnect.rs
+++ b/pumpkin-protocol/src/java/client/login/login_disconnect.rs
@@ -32,3 +32,15 @@ impl ClientPacket for CLoginDisconnect {
         Ok(())
     }
 }
+
+impl<'a> crate::ServerPacket<'a> for CLoginDisconnect {
+    fn read(
+        bytebuf: &mut &'a [u8],
+        _version: &JavaMinecraftVersion,
+    ) -> Result<Self, crate::ser::ReadingError> {
+        use crate::ser::NetworkReadExt;
+        Ok(Self {
+            json_reason: bytebuf.get_str()?.into_string(),
+        })
+    }
+}
diff --git a/pumpkin-protocol/src/java/client/login/login_success.rs b/pumpkin-protocol/src/java/client/login/login_success.rs
index 67fa2b289..fb91fc5c8 100644
--- a/pumpkin-protocol/src/java/client/login/login_success.rs
+++ b/pumpkin-protocol/src/java/client/login/login_success.rs
@@ -57,12 +57,19 @@ impl ClientPacket for CLoginSuccess<'_> {
         mut write: impl std::io::Write,
         version: &JavaMinecraftVersion,
     ) -> Result<(), crate::ser::WritingError> {
-        write.write_uuid(self.uuid)?;
+        if version < &JavaMinecraftVersion::V_1_16 {
+            write.write_string(&self.uuid.to_string())?;
+        } else {
+            write.write_uuid(self.uuid)?;
+        }
         write.write_string(self.username)?;
-        write.write_list(self.properties, |write, property| property.write(write))?;
-        if version < &JavaMinecraftVersion::V_1_21_2 {
+        if version >= &JavaMinecraftVersion::V_1_19 {
+            write.write_list(self.properties, |write, property| property.write(write))?;
+        }
+        if version >= &JavaMinecraftVersion::V_1_20_2 && version < &JavaMinecraftVersion::V_1_21_2 {
             write.write_bool(self.strict_error_handling)?;
-        } else if version >= &JavaMinecraftVersion::V_26_2 {
+        }
+        if version >= &JavaMinecraftVersion::V_26_2 {
             write.write_uuid(&self.session_id)?;
         }
         Ok(())
diff --git a/pumpkin-protocol/src/java/client/play/login.rs b/pumpkin-protocol/src/java/client/play/login.rs
index db4a55392..5cbd66001 100644
--- a/pumpkin-protocol/src/java/client/play/login.rs
+++ b/pumpkin-protocol/src/java/client/play/login.rs
@@ -81,18 +81,36 @@ impl ClientPacket for CLogin<'_> {
     ) -> Result<(), WritingError> {
         write.write_i32_be(self.entity_id)?;
         write.write_bool(self.is_hardcore)?;
-        write.write_list(self.dimension_names, |write, dim| write.write_string(dim))?;
-        write.write_var_int(&self.max_players)?;
-        write.write_var_int(&self.view_distance)?;
-        write.write_var_int(&self.simulated_distance)?;
-        write.write_bool(self.reduced_debug_info)?;
-        write.write_bool(self.enabled_respawn_screen)?;
-        write.write_bool(self.limited_crafting)?;
+        if version >= &JavaMinecraftVersion::V_1_16 {
+            write.write_list(self.dimension_names, |write, dim| write.write_string(dim))?;
+        }
+        if version >= &JavaMinecraftVersion::V_1_16 {
+            write.write_var_int(&self.max_players)?;
+        } else {
+            write.write_u8(self.max_players.0 as u8)?;
+        }
+        if version >= &JavaMinecraftVersion::V_1_14 {
+            write.write_var_int(&self.view_distance)?;
+        }
+        if version >= &JavaMinecraftVersion::V_1_18 {
+            write.write_var_int(&self.simulated_distance)?;
+        }
+        if version >= &JavaMinecraftVersion::V_1_8 {
+            write.write_bool(self.reduced_debug_info)?;
+        }
+        if version >= &JavaMinecraftVersion::V_1_15 {
+            write.write_bool(self.enabled_respawn_screen)?;
+        }
+        if version >= &JavaMinecraftVersion::V_1_19_3 {
+            write.write_bool(self.limited_crafting)?;
+        }
         self.spawn_data.write_packet_data(&mut write, version)?;
         if version >= &JavaMinecraftVersion::V_26_2 {
             write.write_bool(self.online_mode)?;
         }
-        write.write_bool(self.enforce_secure_chat)?;
+        if version >= &JavaMinecraftVersion::V_1_19_1 {
+            write.write_bool(self.enforce_secure_chat)?;
+        }
         Ok(())
     }
 }
diff --git a/pumpkin-protocol/src/java/client/play/player_position.rs b/pumpkin-protocol/src/java/client/play/player_position.rs
index d5d9c33c9..ad3598ca7 100644
--- a/pumpkin-protocol/src/java/client/play/player_position.rs
+++ b/pumpkin-protocol/src/java/client/play/player_position.rs
@@ -69,7 +69,6 @@ impl ClientPacket for CPlayerPosition {
             write.write_f64_be(self.delta.z)?;
             write.write_f32_be(self.yaw)?;
             write.write_f32_be(self.pitch)?;
-            // not sure about that
             write.write_i32_be(PositionFlag::get_bitfield(self.relatives.as_slice()))?;
         } else {
             write.write_f64_be(self.position.x)?;
@@ -77,8 +76,14 @@ impl ClientPacket for CPlayerPosition {
             write.write_f64_be(self.position.z)?;
             write.write_f32_be(self.yaw)?;
             write.write_f32_be(self.pitch)?;
-            write.write_u8(PositionFlag::get_bitfield(self.relatives.as_slice()) as u8)?;
-            write.write_var_int(&self.teleport_id)?;
+            if version >= &JavaMinecraftVersion::V_1_19_4 {
+                write.write_i32_be(PositionFlag::get_bitfield(self.relatives.as_slice()))?;
+            } else {
+                write.write_u8(PositionFlag::get_bitfield(self.relatives.as_slice()) as u8)?;
+            }
+            if version >= &JavaMinecraftVersion::V_1_9 {
+                write.write_var_int(&self.teleport_id)?;
+            }
         }
         Ok(())
     }
diff --git a/pumpkin-protocol/src/java/client/play/player_spawn_data.rs b/pumpkin-protocol/src/java/client/play/player_spawn_data.rs
index 97505a06c..f7f0105df 100644
--- a/pumpkin-protocol/src/java/client/play/player_spawn_data.rs
+++ b/pumpkin-protocol/src/java/client/play/player_spawn_data.rs
@@ -61,8 +61,12 @@ impl PlayerSpawnData {
     ) -> Result<(), WritingError> {
         if version >= &JavaMinecraftVersion::V_1_21_2 {
             write.write_var_int(&VarInt(self.dimension.id as i32))?;
+        } else if version >= &JavaMinecraftVersion::V_1_16 {
+            write.write_string(self.dimension.minecraft_name)?;
+        } else if version >= &JavaMinecraftVersion::V_1_9 {
+            write.write_i32_be(self.dimension.id as i32)?;
         } else {
-            write.write_string("")?;
+            write.write_i8(self.dimension.id as i8)?;
         }
         write.write_string(self.dimension.minecraft_name)?;
         write.write_i64_be(self.hashed_seed)?;
@@ -70,12 +74,16 @@ impl PlayerSpawnData {
         write.write_i8(self.previous_gamemode)?;
         write.write_bool(self.debug)?;
         write.write_bool(self.is_flat)?;
-        write.write_option(&self.death_dimension_name, |write, (dim, pos)| {
-            write.write_string(dim)?;
-            write.write_block_pos(pos)?;
-            Ok(())
-        })?;
-        write.write_var_int(&self.portal_cooldown)?;
+        if version >= &JavaMinecraftVersion::V_1_19 {
+            write.write_option(&self.death_dimension_name, |write, (dim, pos)| {
+                write.write_string(dim)?;
+                write.write_block_pos(pos)?;
+                Ok(())
+            })?;
+        }
+        if version >= &JavaMinecraftVersion::V_1_20 {
+            write.write_var_int(&self.portal_cooldown)?;
+        }
         if version >= &JavaMinecraftVersion::V_1_21_2 {
             write.write_var_int(&self.sealevel)?;
         }
diff --git a/pumpkin-protocol/src/java/client/status/ping_response.rs b/pumpkin-protocol/src/java/client/status/ping_response.rs
index 7bcd146da..3142a4812 100644
--- a/pumpkin-protocol/src/java/client/status/ping_response.rs
+++ b/pumpkin-protocol/src/java/client/status/ping_response.rs
@@ -35,3 +35,15 @@ impl ClientPacket for CPingResponse {
         Ok(())
     }
 }
+
+impl<'a> crate::ServerPacket<'a> for CPingResponse {
+    fn read(
+        bytebuf: &mut &'a [u8],
+        _version: &JavaMinecraftVersion,
+    ) -> Result<Self, crate::ser::ReadingError> {
+        use crate::ser::NetworkReadExt;
+        Ok(Self {
+            payload: bytebuf.get_i64_be()?,
+        })
+    }
+}
diff --git a/pumpkin-protocol/src/java/client/status/status_response.rs b/pumpkin-protocol/src/java/client/status/status_response.rs
index 96e9917cb..dcbbf862f 100644
--- a/pumpkin-protocol/src/java/client/status/status_response.rs
+++ b/pumpkin-protocol/src/java/client/status/status_response.rs
@@ -34,3 +34,15 @@ impl ClientPacket for CStatusResponse {
         Ok(())
     }
 }
+
+impl<'a> crate::ServerPacket<'a> for CStatusResponse {
+    fn read(
+        bytebuf: &mut &'a [u8],
+        _version: &JavaMinecraftVersion,
+    ) -> Result<Self, crate::ser::ReadingError> {
+        use crate::ser::NetworkReadExt;
+        Ok(Self {
+            json_response: bytebuf.get_str()?.into_string(),
+        })
+    }
+}
diff --git a/pumpkin-protocol/src/java/server/config/acknowledge_finish_config.rs b/pumpkin-protocol/src/java/server/config/acknowledge_finish_config.rs
index e821bc5fb..96d7ae9b6 100644
--- a/pumpkin-protocol/src/java/server/config/acknowledge_finish_config.rs
+++ b/pumpkin-protocol/src/java/server/config/acknowledge_finish_config.rs
@@ -17,3 +17,13 @@ impl<'a> ServerPacket<'a> for SAcknowledgeFinishConfig {
         Ok(Self)
     }
 }
+
+impl crate::ClientPacket for SAcknowledgeFinishConfig {
+    fn write_packet_data(
+        &self,
+        _write: impl std::io::Write,
+        _version: &JavaMinecraftVersion,
+    ) -> Result<(), crate::ser::WritingError> {
+        Ok(())
+    }
+}
diff --git a/pumpkin-protocol/src/java/server/config/client_information.rs b/pumpkin-protocol/src/java/server/config/client_information.rs
index 8a3fe48b5..e4bbb1e81 100644
--- a/pumpkin-protocol/src/java/server/config/client_information.rs
+++ b/pumpkin-protocol/src/java/server/config/client_information.rs
@@ -31,16 +31,37 @@ pub struct SClientInformationConfig<'a> {
 }
 
 impl<'a> ServerPacket<'a> for SClientInformationConfig<'a> {
-    fn read(bytebuf: &mut &'a [u8], _version: &JavaMinecraftVersion) -> Result<Self, ReadingError> {
+    fn read(bytebuf: &mut &'a [u8], version: &JavaMinecraftVersion) -> Result<Self, ReadingError> {
+        let locale = bytebuf.get_str_borrowed()?;
+        let view_distance = bytebuf.get_i8()?;
+        let chat_mode = bytebuf.get_var_int()?;
+        let chat_colors = bytebuf.get_bool()?;
+        let skin_parts = bytebuf.get_u8()?;
+        let main_hand = if version >= &JavaMinecraftVersion::V_1_9 {
+            bytebuf.get_var_int()?
+        } else {
+            VarInt(1)
+        };
+        let text_filtering = if version >= &JavaMinecraftVersion::V_1_17 {
+            bytebuf.get_bool()?
+        } else {
+            false
+        };
+        let server_listing = if version >= &JavaMinecraftVersion::V_1_18 {
+            bytebuf.get_bool()?
+        } else {
+            true
+        };
+
         Ok(Self {
-            locale: bytebuf.get_str_borrowed()?,
-            view_distance: bytebuf.get_i8()?,
-            chat_mode: bytebuf.get_var_int()?,
-            chat_colors: bytebuf.get_bool()?,
-            skin_parts: bytebuf.get_u8()?,
-            main_hand: bytebuf.get_var_int()?,
-            text_filtering: bytebuf.get_bool()?,
-            server_listing: bytebuf.get_bool()?,
+            locale,
+            view_distance,
+            chat_mode,
+            chat_colors,
+            skin_parts,
+            main_hand,
+            text_filtering,
+            server_listing,
         })
     }
 }
diff --git a/pumpkin-protocol/src/java/server/config/known_packs.rs b/pumpkin-protocol/src/java/server/config/known_packs.rs
index 8da89ffa7..a78f664a3 100644
--- a/pumpkin-protocol/src/java/server/config/known_packs.rs
+++ b/pumpkin-protocol/src/java/server/config/known_packs.rs
@@ -1,24 +1,33 @@
-use pumpkin_data::packet::serverbound::CONFIG_SELECT_KNOWN_PACKS;
-use pumpkin_macros::java_packet;
-
-use crate::VarInt;
-
+use crate::KnownPack;
 use crate::{
     ServerPacket,
-    ser::{NetworkReadExt, ReadingError},
+    ser::{NetworkReadExt, NetworkReadSliceExt, ReadingError},
 };
+use pumpkin_data::packet::serverbound::CONFIG_SELECT_KNOWN_PACKS;
+use pumpkin_macros::java_packet;
 use pumpkin_util::version::JavaMinecraftVersion;
 
 #[java_packet(CONFIG_SELECT_KNOWN_PACKS)]
-pub struct SKnownPacks {
-    pub known_pack_count: VarInt,
-    // known_packs: &'a [KnownPack]
+pub struct SKnownPacks<'a> {
+    pub known_packs: Vec<KnownPack<'a>>,
 }
 
-impl<'a> ServerPacket<'a> for SKnownPacks {
+impl<'a> ServerPacket<'a> for SKnownPacks<'a> {
     fn read(bytebuf: &mut &'a [u8], _version: &JavaMinecraftVersion) -> Result<Self, ReadingError> {
-        Ok(Self {
-            known_pack_count: bytebuf.get_var_int()?,
-        })
+        let count = bytebuf.get_var_int()?.0;
+        if !(0..=64).contains(&count) {
+            return Err(ReadingError::Message(
+                "Known packs count out of bounds".into(),
+            ));
+        }
+        let mut known_packs = Vec::with_capacity(count as usize);
+        for _ in 0..count {
+            known_packs.push(KnownPack {
+                namespace: bytebuf.get_str_borrowed()?,
+                id: bytebuf.get_str_borrowed()?,
+                version: bytebuf.get_str_borrowed()?,
+            });
+        }
+        Ok(Self { known_packs })
     }
 }
diff --git a/pumpkin-protocol/src/java/server/login/encryption_response.rs b/pumpkin-protocol/src/java/server/login/encryption_response.rs
index f7765b900..a5f232f7c 100644
--- a/pumpkin-protocol/src/java/server/login/encryption_response.rs
+++ b/pumpkin-protocol/src/java/server/login/encryption_response.rs
@@ -25,6 +25,21 @@ impl<'a> ServerPacket<'a> for SEncryptionResponse {
     }
 }
 
+impl crate::ClientPacket for SEncryptionResponse {
+    fn write_packet_data(
+        &self,
+        mut write: impl std::io::Write,
+        _version: &JavaMinecraftVersion,
+    ) -> Result<(), crate::ser::WritingError> {
+        use crate::ser::NetworkWriteExt;
+        write.write_var_int(&crate::VarInt(self.shared_secret.len() as i32))?;
+        write.write_all(&self.shared_secret)?;
+        write.write_var_int(&crate::VarInt(self.verify_token.len() as i32))?;
+        write.write_all(&self.verify_token)?;
+        Ok(())
+    }
+}
+
 fn read_encryption_buffer(read: &mut impl NetworkReadExt) -> Result<Box<[u8]>, ReadingError> {
     let length = read.get_var_int()?.0 as usize;
     if length > 256 {
diff --git a/pumpkin-protocol/src/java/server/login/login_start.rs b/pumpkin-protocol/src/java/server/login/login_start.rs
index 63645633a..f2de96055 100644
--- a/pumpkin-protocol/src/java/server/login/login_start.rs
+++ b/pumpkin-protocol/src/java/server/login/login_start.rs
@@ -14,10 +14,31 @@ pub struct SLoginStart {
 }
 
 impl<'a> ServerPacket<'a> for SLoginStart {
-    fn read(read: &mut &'a [u8], _version: &JavaMinecraftVersion) -> Result<Self, ReadingError> {
-        Ok(Self {
-            name: read.get_str_bounded(16)?,
-            uuid: read.get_uuid()?,
-        })
+    fn read(read: &mut &'a [u8], version: &JavaMinecraftVersion) -> Result<Self, ReadingError> {
+        let name = read.get_str_bounded(16)?;
+        let uuid = if version >= &JavaMinecraftVersion::V_1_20_2 {
+            read.get_uuid()?
+        } else {
+            uuid::Uuid::new_v3(
+                &uuid::Uuid::nil(),
+                format!("OfflinePlayer:{name}").as_bytes(),
+            )
+        };
+        Ok(Self { name, uuid })
+    }
+}
+
+impl crate::ClientPacket for SLoginStart {
+    fn write_packet_data(
+        &self,
+        mut write: impl std::io::Write,
+        version: &JavaMinecraftVersion,
+    ) -> Result<(), crate::ser::WritingError> {
+        use crate::ser::NetworkWriteExt;
+        write.write_string_bounded(&self.name, 16)?;
+        if version >= &JavaMinecraftVersion::V_1_20_2 {
+            write.write_uuid(&self.uuid)?;
+        }
+        Ok(())
     }
 }
diff --git a/pumpkin-protocol/src/java/server/play/chat_message.rs b/pumpkin-protocol/src/java/server/play/chat_message.rs
index 8ce6e9cfa..b41bbd5a7 100644
--- a/pumpkin-protocol/src/java/server/play/chat_message.rs
+++ b/pumpkin-protocol/src/java/server/play/chat_message.rs
@@ -21,15 +21,27 @@ pub struct SChatMessage<'a> {
 }
 
 impl<'a> ServerPacket<'a> for SChatMessage<'a> {
-    fn read(read: &mut &'a [u8], _version: &JavaMinecraftVersion) -> Result<Self, ReadingError> {
+    fn read(read: &mut &'a [u8], version: &JavaMinecraftVersion) -> Result<Self, ReadingError> {
+        let message = read.get_str_bounded_borrowed(256)?;
+        let timestamp = read.get_i64_be()?;
+        let salt = read.get_i64_be()?;
+        let signature = read.get_option(|v| v.read_slice_borrowed(256))?;
+        let message_count = read.get_var_int()?;
+        let acknowledged = read.read_slice_borrowed(3)?;
+        let checksum = if version >= &JavaMinecraftVersion::V_1_21_5 {
+            read.get_u8()?
+        } else {
+            0
+        };
+
         Ok(Self {
-            message: read.get_str_bounded_borrowed(256)?,
-            timestamp: read.get_i64_be()?,
-            salt: read.get_i64_be()?,
-            signature: read.get_option(|v| v.read_slice_borrowed(256))?,
-            message_count: read.get_var_int()?,
-            acknowledged: read.read_slice_borrowed(3)?,
-            checksum: read.get_u8()?,
+            message,
+            timestamp,
+            salt,
+            signature,
+            message_count,
+            acknowledged,
+            checksum,
         })
     }
 }
@@ -38,7 +50,7 @@ impl ClientPacket for SChatMessage<'_> {
     fn write_packet_data(
         &self,
         mut write: impl std::io::Write,
-        _version: &JavaMinecraftVersion,
+        version: &JavaMinecraftVersion,
     ) -> Result<(), crate::ser::WritingError> {
         write.write_string(self.message)?;
         write.write_i64_be(self.timestamp)?;
@@ -46,7 +58,9 @@ impl ClientPacket for SChatMessage<'_> {
         write.write_option(&self.signature, |p, v| p.write_slice(v))?;
         write.write_var_int(&self.message_count)?;
         write.write_slice(self.acknowledged)?;
-        write.write_u8(self.checksum)?;
+        if version >= &JavaMinecraftVersion::V_1_21_5 {
+            write.write_u8(self.checksum)?;
+        }
 
         Ok(())
     }
diff --git a/pumpkin-protocol/src/java/server/play/click_container.rs b/pumpkin-protocol/src/java/server/play/click_container.rs
index 8846d3cae..f38ce9f90 100644
--- a/pumpkin-protocol/src/java/server/play/click_container.rs
+++ b/pumpkin-protocol/src/java/server/play/click_container.rs
@@ -25,10 +25,14 @@ pub struct SClickSlot {
 impl<'a> ServerPacket<'a> for SClickSlot {
     fn read(
         mut bytebuf: &mut &'a [u8],
-        _version: &JavaMinecraftVersion,
+        version: &JavaMinecraftVersion,
     ) -> Result<Self, ReadingError> {
         let sync_id = bytebuf.get_var_int()?;
-        let revision = bytebuf.get_var_int()?;
+        let revision = if version >= &JavaMinecraftVersion::V_1_17_1 {
+            bytebuf.get_var_int()?
+        } else {
+            VarInt(i32::from(bytebuf.get_i16_be()?))
+        };
         let slot = bytebuf.get_i16_be()?;
         let button = bytebuf.get_i8()?;
         let mode = SlotActionType::read(&mut bytebuf)?;
diff --git a/pumpkin-protocol/src/java/server/play/client_information.rs b/pumpkin-protocol/src/java/server/play/client_information.rs
index c91bbf137..8565717f7 100644
--- a/pumpkin-protocol/src/java/server/play/client_information.rs
+++ b/pumpkin-protocol/src/java/server/play/client_information.rs
@@ -21,16 +21,37 @@ pub struct SClientInformationPlay<'a> {
 }
 
 impl<'a> ServerPacket<'a> for SClientInformationPlay<'a> {
-    fn read(bytebuf: &mut &'a [u8], _version: &JavaMinecraftVersion) -> Result<Self, ReadingError> {
+    fn read(bytebuf: &mut &'a [u8], version: &JavaMinecraftVersion) -> Result<Self, ReadingError> {
+        let locale = bytebuf.get_str_borrowed()?;
+        let view_distance = bytebuf.get_i8()?;
+        let chat_mode = bytebuf.get_var_int()?;
+        let chat_colors = bytebuf.get_bool()?;
+        let skin_parts = bytebuf.get_u8()?;
+        let main_hand = if version >= &JavaMinecraftVersion::V_1_9 {
+            bytebuf.get_var_int()?
+        } else {
+            VarInt(1)
+        };
+        let text_filtering = if version >= &JavaMinecraftVersion::V_1_17 {
+            bytebuf.get_bool()?
+        } else {
+            false
+        };
+        let server_listing = if version >= &JavaMinecraftVersion::V_1_18 {
+            bytebuf.get_bool()?
+        } else {
+            true
+        };
+
         Ok(Self {
-            locale: bytebuf.get_str_borrowed()?,
-            view_distance: bytebuf.get_i8()?,
-            chat_mode: bytebuf.get_var_int()?,
-            chat_colors: bytebuf.get_bool()?,
-            skin_parts: bytebuf.get_u8()?,
-            main_hand: bytebuf.get_var_int()?,
-            text_filtering: bytebuf.get_bool()?,
-            server_listing: bytebuf.get_bool()?,
+            locale,
+            view_distance,
+            chat_mode,
+            chat_colors,
+            skin_parts,
+            main_hand,
+            text_filtering,
+            server_listing,
         })
     }
 }
diff --git a/pumpkin-protocol/src/java/server/play/player_command.rs b/pumpkin-protocol/src/java/server/play/player_command.rs
index e32a47a8e..b2a9b9910 100644
--- a/pumpkin-protocol/src/java/server/play/player_command.rs
+++ b/pumpkin-protocol/src/java/server/play/player_command.rs
@@ -15,6 +15,7 @@ pub struct SPlayerCommand {
     pub jump_boost: VarInt,
 }
 
+#[derive(PartialEq, Eq, Debug)]
 pub enum Action {
     // <=1.21.5
     StartSneaking,
diff --git a/pumpkin-protocol/src/java/server/play/player_input.rs b/pumpkin-protocol/src/java/server/play/player_input.rs
index bd7f01a34..b8e922ef9 100644
--- a/pumpkin-protocol/src/java/server/play/player_input.rs
+++ b/pumpkin-protocol/src/java/server/play/player_input.rs
@@ -23,9 +23,36 @@ impl SPlayerInput {
 }
 
 impl<'a> ServerPacket<'a> for SPlayerInput {
-    fn read(bytebuf: &mut &'a [u8], _version: &JavaMinecraftVersion) -> Result<Self, ReadingError> {
-        Ok(Self {
-            input: bytebuf.get_i8()?,
-        })
+    fn read(bytebuf: &mut &'a [u8], version: &JavaMinecraftVersion) -> Result<Self, ReadingError> {
+        if version >= &JavaMinecraftVersion::V_1_21_2 {
+            Ok(Self {
+                input: bytebuf.get_i8()?,
+            })
+        } else {
+            let sideways = bytebuf.get_f32_be()?;
+            let forward = bytebuf.get_f32_be()?;
+            let jumping = bytebuf.get_bool()?;
+            let sneaking = bytebuf.get_bool()?;
+
+            let mut input: i8 = 0;
+            if forward > 0.0 {
+                input |= Self::FORWARD;
+            } else if forward < 0.0 {
+                input |= Self::BACKWARD;
+            }
+            if sideways > 0.0 {
+                input |= Self::LEFT;
+            } else if sideways < 0.0 {
+                input |= Self::RIGHT;
+            }
+            if jumping {
+                input |= Self::JUMP;
+            }
+            if sneaking {
+                input |= Self::SNEAK;
+            }
+
+            Ok(Self { input })
+        }
     }
 }
diff --git a/pumpkin-protocol/src/java/server/play/use_item.rs b/pumpkin-protocol/src/java/server/play/use_item.rs
index 9510b34f9..cbaa955e8 100644
--- a/pumpkin-protocol/src/java/server/play/use_item.rs
+++ b/pumpkin-protocol/src/java/server/play/use_item.rs
@@ -18,15 +18,20 @@ pub struct SUseItem {
 }
 
 impl<'a> ServerPacket<'a> for SUseItem {
-    fn read(
-        bytebuf: &mut &'a [u8],
-        _protocol_version: &JavaMinecraftVersion,
-    ) -> Result<Self, ReadingError> {
+    fn read(bytebuf: &mut &'a [u8], version: &JavaMinecraftVersion) -> Result<Self, ReadingError> {
+        let hand = bytebuf.get_var_int()?;
+        let sequence = bytebuf.get_var_int()?;
+        let (yaw, pitch) = if version >= &JavaMinecraftVersion::V_1_21_2 {
+            (bytebuf.get_f32_be()?, bytebuf.get_f32_be()?)
+        } else {
+            (0.0, 0.0)
+        };
+
         Ok(Self {
-            hand: bytebuf.get_var_int()?,
-            sequence: bytebuf.get_var_int()?,
-            yaw: bytebuf.get_f32_be()?,
-            pitch: bytebuf.get_f32_be()?,
+            hand,
+            sequence,
+            yaw,
+            pitch,
         })
     }
 }
diff --git a/pumpkin-protocol/src/java/server/play/use_item_on.rs b/pumpkin-protocol/src/java/server/play/use_item_on.rs
index cc4c83d4f..d04fe3914 100644
--- a/pumpkin-protocol/src/java/server/play/use_item_on.rs
+++ b/pumpkin-protocol/src/java/server/play/use_item_on.rs
@@ -21,19 +21,31 @@ pub struct SUseItemOn {
 }
 
 impl<'a> ServerPacket<'a> for SUseItemOn {
-    fn read(bytebuf: &mut &'a [u8], _version: &JavaMinecraftVersion) -> Result<Self, ReadingError> {
+    fn read(bytebuf: &mut &'a [u8], version: &JavaMinecraftVersion) -> Result<Self, ReadingError> {
+        let hand = bytebuf.get_var_int()?;
+        let position = BlockPos::from_i64(bytebuf.get_i64_be()?);
+        let face = bytebuf.get_var_int()?;
+        let cursor_pos = Vector3::new(
+            bytebuf.get_f32_be()?,
+            bytebuf.get_f32_be()?,
+            bytebuf.get_f32_be()?,
+        );
+        let inside_block = bytebuf.get_bool()?;
+        let is_against_world_border = if version >= &JavaMinecraftVersion::V_1_21_5 {
+            bytebuf.get_bool()?
+        } else {
+            false
+        };
+        let sequence = bytebuf.get_var_int()?;
+
         Ok(Self {
-            hand: bytebuf.get_var_int()?,
-            position: BlockPos::from_i64(bytebuf.get_i64_be()?),
-            face: bytebuf.get_var_int()?,
-            cursor_pos: Vector3::new(
-                bytebuf.get_f32_be()?,
-                bytebuf.get_f32_be()?,
-                bytebuf.get_f32_be()?,
-            ),
-            inside_block: bytebuf.get_bool()?,
-            is_against_world_border: bytebuf.get_bool()?,
-            sequence: bytebuf.get_var_int()?,
+            hand,
+            position,
+            face,
+            cursor_pos,
+            inside_block,
+            is_against_world_border,
+            sequence,
         })
     }
 }
diff --git a/pumpkin-protocol/src/java/server/status/ping_request.rs b/pumpkin-protocol/src/java/server/status/ping_request.rs
index cfb6a83b2..307ebd903 100644
--- a/pumpkin-protocol/src/java/server/status/ping_request.rs
+++ b/pumpkin-protocol/src/java/server/status/ping_request.rs
@@ -1,6 +1,6 @@
 use crate::{
     ServerPacket,
-    ser::{NetworkReadExt, ReadingError},
+    ser::{NetworkReadExt, NetworkWriteExt, ReadingError},
 };
 use pumpkin_data::packet::serverbound::STATUS_PING_REQUEST;
 use pumpkin_macros::java_packet;
@@ -25,3 +25,14 @@ impl<'a> ServerPacket<'a> for SStatusPingRequest {
         })
     }
 }
+
+impl crate::ClientPacket for SStatusPingRequest {
+    fn write_packet_data(
+        &self,
+        mut write: impl std::io::Write,
+        _version: &JavaMinecraftVersion,
+    ) -> Result<(), crate::ser::WritingError> {
+        write.write_i64_be(self.payload)?;
+        Ok(())
+    }
+}
diff --git a/pumpkin-protocol/src/java/server/status/status_request.rs b/pumpkin-protocol/src/java/server/status/status_request.rs
index ca6065241..65991ab00 100644
--- a/pumpkin-protocol/src/java/server/status/status_request.rs
+++ b/pumpkin-protocol/src/java/server/status/status_request.rs
@@ -18,3 +18,13 @@ impl<'a> ServerPacket<'a> for SStatusRequest {
         Ok(Self)
     }
 }
+
+impl crate::ClientPacket for SStatusRequest {
+    fn write_packet_data(
+        &self,
+        _write: impl std::io::Write,
+        _version: &JavaMinecraftVersion,
+    ) -> Result<(), crate::ser::WritingError> {
+        Ok(())
+    }
+}
diff --git a/pumpkin/src/entity/player.rs b/pumpkin/src/entity/player.rs
index 60b123cc8..7bdd2c57e 100644
--- a/pumpkin/src/entity/player.rs
+++ b/pumpkin/src/entity/player.rs
@@ -2126,15 +2126,14 @@ impl Player {
         progress.clamp(0.0, 1.0)
     }
 
-    pub async fn fire_packet_sent<P: 'static + Send + Sync + std::any::Any + Clone>(
+    pub async fn fire_packet_sent<P: Send + Sync + std::any::Any>(
         self: &Arc<Self>,
-        packet: &P,
+        packet: P,
         packet_id: i32,
         payload: Bytes,
     ) -> bool {
         if let Some(server) = self.world().server.upgrade() {
-            let event =
-                PacketSentEvent::new(self.clone(), packet_id, payload, Arc::new(packet.clone()));
+            let event = PacketSentEvent::new(self.clone(), packet_id, payload, Arc::new(packet));
             let event = server.plugin_manager.fire(event).await;
             return event.cancelled;
         }
diff --git a/pumpkin/src/net/java/config.rs b/pumpkin/src/net/java/config.rs
index 573a46dc4..3e8bb382c 100644
--- a/pumpkin/src/net/java/config.rs
+++ b/pumpkin/src/net/java/config.rs
@@ -1,7 +1,4 @@
-use std::{
-    num::NonZeroU8,
-    sync::{Arc, atomic::Ordering},
-};
+use std::{num::NonZeroU8, sync::atomic::Ordering};
 
 use crate::{
     entity::player::ChatMode,
@@ -16,7 +13,7 @@ use pumpkin_data::{registry::Registry, translation};
 use pumpkin_protocol::{
     ConnectionState,
     java::{
-        client::config::{CFinishConfig, CRegistryData, CUpdateTags},
+        client::config::{CFeatureFlags, CFinishConfig, CRegistryData, CUpdateTags},
         server::config::{
             ResourcePackResponseResult, SClientInformationConfig, SConfigCookieResponse,
             SConfigResourcePack, SKeepAlive, SKnownPacks, SPluginMessage,
@@ -156,24 +153,44 @@ impl JavaClient {
 
     pub async fn handle_known_packs(
         &self,
-        _config_acknowledged: SKnownPacks,
-        server: &Arc<Server>,
+        _config_acknowledged: SKnownPacks<'_>,
+        server: &Server,
     ) -> Option<PacketHandlerResult> {
         debug!("Handling known packs");
         // let mut tags_to_send = Vec::new();
         let version = self.version.load();
-        let registry = Registry::get_synced(version);
-        for registry in registry {
-            self.send_packet_now(&CRegistryData::new(
-                &registry.registry_id,
-                &registry.registry_entries,
-            ))
-            .await;
-            // if let Some(tag) = RegistryKey::from_string(&registry.registry_id.path)
-            //     && pumpkin_data::tag::get_registry_key_tags(self.version.load(), tag).is_some()
-            // {
-            //     tags_to_send.push(tag);
-            // }
+        if version >= JavaMinecraftVersion::V_1_20_2 {
+            self.send_packet_now(&CFeatureFlags::new(&["minecraft:vanilla".to_string()]))
+                .await;
+            let registry = Registry::get_synced(version);
+            let mut sent_dimension_type = false;
+            for reg in &registry {
+                if reg.registry_id == "minecraft:dimension_type" {
+                    sent_dimension_type = true;
+                }
+                self.send_packet_now(&CRegistryData::new(&reg.registry_id, &reg.registry_entries))
+                    .await;
+            }
+            if !sent_dimension_type {
+                let dims = [
+                    &pumpkin_data::dimension::Dimension::OVERWORLD,
+                    &pumpkin_data::dimension::Dimension::OVERWORLD_CAVES,
+                    &pumpkin_data::dimension::Dimension::THE_END,
+                    &pumpkin_data::dimension::Dimension::THE_NETHER,
+                ];
+                let dim_entries: Vec<pumpkin_data::registry::RegistryEntryData> = dims
+                    .iter()
+                    .map(|dim| pumpkin_data::registry::RegistryEntryData {
+                        entry_id: dim.minecraft_name.to_string(),
+                        data: Some(build_dimension_nbt(dim).into_boxed_slice()),
+                    })
+                    .collect();
+                self.send_packet_now(&CRegistryData::new(
+                    &"minecraft:dimension_type".to_string(),
+                    &dim_entries,
+                ))
+                .await;
+            }
         }
         //self.send_packet_now(&CUpdateTags::new(&tags_to_send)).await;
         let mut tags = vec![
@@ -244,7 +261,7 @@ impl JavaClient {
         }
     }
 
-    pub async fn handle_config_acknowledged(&self, server: &Arc<Server>) -> PacketHandlerResult {
+    pub async fn handle_config_acknowledged(&self, server: &Server) -> PacketHandlerResult {
         debug!("Handling config acknowledgement");
         self.connection_state.store(ConnectionState::Play);
 
@@ -261,3 +278,38 @@ impl JavaClient {
         PacketHandlerResult::ReadyToPlay(profile, config.clone().unwrap_or_default())
     }
 }
+
+fn build_dimension_nbt(dim: &pumpkin_data::dimension::Dimension) -> Vec<u8> {
+    let mut compound = pumpkin_nbt::compound::NbtCompound::new();
+    compound.put_float("ambient_light", dim.ambient_light);
+    compound.put_int("height", dim.height);
+    compound.put_int("logical_height", dim.logical_height);
+    compound.put_int("min_y", dim.min_y);
+    compound.put_string("infiniburn", dim.infiniburn.to_string());
+    compound.put_int(
+        "monster_spawn_block_light_limit",
+        dim.monster_spawn_block_light_limit as i32,
+    );
+    compound.put_double("coordinate_scale", dim.coordinate_scale);
+    compound.put_byte("has_skylight", i8::from(dim.has_skylight));
+    compound.put_byte("has_ceiling", i8::from(dim.has_ceiling));
+    compound.put_byte("ultrawarm", i8::from(dim.id == 3));
+    compound.put_byte("natural", i8::from(dim.id == 0 || dim.id == 1));
+    compound.put_byte("piglin_safe", i8::from(dim.id == 3));
+    compound.put_byte("respawn_anchor_works", i8::from(dim.id == 3));
+    compound.put_byte("bed_works", i8::from(dim.id == 0 || dim.id == 1));
+    compound.put_byte("has_raids", i8::from(dim.id == 0 || dim.id == 1));
+    compound.put_string("effects", dim.minecraft_name.to_string());
+
+    let mut monster_spawn = pumpkin_nbt::compound::NbtCompound::new();
+    monster_spawn.put_string("type", "minecraft:uniform".to_string());
+    let mut value = pumpkin_nbt::compound::NbtCompound::new();
+    value.put_int("min_inclusive", 0);
+    value.put_int("max_inclusive", 7);
+    monster_spawn.put_compound("value", value);
+    compound.put_compound("monster_spawn_light_level", monster_spawn);
+
+    let mut bytes = Vec::new();
+    let _ = pumpkin_nbt::serializer::to_bytes(&compound, &mut bytes);
+    bytes
+}
diff --git a/pumpkin/src/net/java/login.rs b/pumpkin/src/net/java/login.rs
index df0778b14..4bf36c978 100644
--- a/pumpkin/src/net/java/login.rs
+++ b/pumpkin/src/net/java/login.rs
@@ -6,6 +6,7 @@ use pumpkin_protocol::{
         config::{CConfigAddResourcePack, CConfigServerLinks, CKnownPacks},
         login::{CLoginSuccess, CSetCompression},
     },
+    java::server::config::SKnownPacks,
     java::server::login::{
         SEncryptionResponse, SLoginCookieResponse, SLoginPluginResponse, SLoginStart,
     },
@@ -201,6 +202,9 @@ impl JavaClient {
     }
 
     async fn enable_compression(&self, server: &Server) {
+        if self.version.load() < JavaMinecraftVersion::V_1_8 {
+            return;
+        }
         let compression = server
             .advanced_config
             .networking
@@ -226,6 +230,9 @@ impl JavaClient {
             uuid::Uuid::new_v4(),
         );
         self.send_packet_now(&packet).await;
+        if self.version.load() < JavaMinecraftVersion::V_1_20_2 {
+            self.connection_state.store(ConnectionState::Play);
+        }
     }
 
     async fn authenticate(
@@ -405,19 +412,27 @@ impl JavaClient {
             );
 
             self.send_packet_now(&resource_pack).await;
-        } else {
-            // This will be invoked by our resource pack handler in the case of the above branch.
+        } else if self.version.load() >= JavaMinecraftVersion::V_1_20_5 {
             self.send_known_packs().await;
+        } else {
+            self.handle_known_packs(
+                SKnownPacks {
+                    known_packs: Vec::new(),
+                },
+                server,
+            )
+            .await;
         }
         debug!("login acknowledged");
     }
 
     /// Send the known data packs to the client.
     pub async fn send_known_packs(&self) {
+        let version_str = self.version.load().to_string();
         self.send_packet_now(&CKnownPacks::new(&[KnownPack {
             namespace: "minecraft",
             id: "core",
-            version: "26.2",
+            version: &version_str,
         }]))
         .await;
     }
diff --git a/pumpkin/src/net/java/mod.rs b/pumpkin/src/net/java/mod.rs
index 26208498e..3ad0a58ad 100644
--- a/pumpkin/src/net/java/mod.rs
+++ b/pumpkin/src/net/java/mod.rs
@@ -780,7 +780,6 @@ impl JavaClient {
         debug!("Handling login group for id");
         let mut payload = &packet.payload[..];
         let version = self.version.load();
-
         match packet.id {
             id if id == SLoginStart::to_id(version) => {
                 self.handle_login_start(server, SLoginStart::read(&mut payload, &version)?)
diff --git a/pumpkin/src/plugin/loader/wasm/wasm_host/wit/v0_1/generated_packets.rs b/pumpkin/src/plugin/loader/wasm/wasm_host/wit/v0_1/generated_packets.rs
index b8b3fd2bd..d31459b64 100644
--- a/pumpkin/src/plugin/loader/wasm/wasm_host/wit/v0_1/generated_packets.rs
+++ b/pumpkin/src/plugin/loader/wasm/wasm_host/wit/v0_1/generated_packets.rs
@@ -771,7 +771,7 @@ pub fn deserialize_java_serverbound_packet(
             use pumpkin_protocol::ServerPacket;
             let p = <pumpkin_protocol::java::server::config::SKnownPacks as pumpkin_protocol::ServerPacket>::read(&mut payload, &version).ok()?;
             Some(ServerboundPacket::ConfigSKnownPacks(crate::plugin::loader::wasm::wasm_host::wit::v0_1::pumpkin::plugin::java_packets::ConfigSKnownPacks {
-                known_pack_count: p.known_pack_count.0.try_into().unwrap(),
+                known_pack_count: p.known_packs.len().try_into().unwrap(),
             }))
         }
         id if id == pumpkin_protocol::java::server::config::SConfigResourcePack::to_id(version) => {