diff --git a/Cargo.toml b/Cargo.toml
index a9ab9b6..0af8357 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -6,6 +6,7 @@ members = [
     "crates/rust4d_render",
     "crates/rust4d_input",
     "crates/rust4d_physics",
+    "crates/rust4d_game",
 ]
 
 [workspace.dependencies]
@@ -27,6 +28,7 @@ rust4d_core = { path = "crates/rust4d_core" }
 rust4d_render = { path = "crates/rust4d_render" }
 rust4d_input = { path = "crates/rust4d_input" }
 rust4d_physics = { path = "crates/rust4d_physics" }
+rust4d_game = { path = "crates/rust4d_game" }
 
 [package]
 name = "rust4d"
@@ -47,6 +49,7 @@ rust4d_core.workspace = true
 rust4d_render.workspace = true
 rust4d_input.workspace = true
 rust4d_physics.workspace = true
+rust4d_game.workspace = true
 wgpu.workspace = true
 winit.workspace = true
 pollster.workspace = true
diff --git a/crates/rust4d_game/Cargo.toml b/crates/rust4d_game/Cargo.toml
new file mode 100644
index 0000000..16716d4
--- /dev/null
+++ b/crates/rust4d_game/Cargo.toml
@@ -0,0 +1,10 @@
+[package]
+name = "rust4d_game"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+rust4d_math.workspace = true
+rust4d_physics.workspace = true
+rust4d_core.workspace = true
+log.workspace = true
diff --git a/crates/rust4d_game/src/lib.rs b/crates/rust4d_game/src/lib.rs
new file mode 100644
index 0000000..20777cc
--- /dev/null
+++ b/crates/rust4d_game/src/lib.rs
@@ -0,0 +1,17 @@
+//! Game logic layer for Rust4D
+//!
+//! This crate bridges the engine and game-specific code, providing:
+//!
+//! - [`CharacterController4D`] - First-person character controller for 4D space
+//! - [`EventBus`] - Typed event bus for game events
+//! - [`StateMachine`] - Generic finite state machine
+//! - Scene helpers for physics setup from entity tags
+
+pub mod character_controller;
+pub mod events;
+pub mod fsm;
+pub mod scene_helpers;
+
+pub use character_controller::{CharacterController4D, CharacterConfig};
+pub use events::EventBus;
+pub use fsm::StateMachine;