diff --git a/CMakeLists.txt b/CMakeLists.txt
index ee733ba..1361459 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,25 +1,25 @@
 cmake_minimum_required(VERSION 3.10.0)
-project(opencge VERSION 0.1.0 LANGUAGES C CXX)
+project(Boundard VERSION 0.1.0 LANGUAGES C CXX)
 set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
 
-add_library(opencge STATIC
-    src/opencge.cpp
+add_library(boundard STATIC
+    src/boundard.cpp
     src/game.cpp
     src/render.cpp
     src/config.cpp
     src/engine.cpp
 )
-target_include_directories(opencge PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/include)
-target_compile_features(opencge PUBLIC cxx_std_17)
+target_include_directories(boundard PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/include)
+target_compile_features(boundard PUBLIC cxx_std_17)
 
 find_package(glfw3 REQUIRED)
 find_package(Vulkan REQUIRED)
 find_package(PkgConfig REQUIRED)
 pkg_check_modules(JSONCPP REQUIRED IMPORTED_TARGET jsoncpp)
-target_link_libraries(opencge PUBLIC glfw Vulkan::Vulkan PkgConfig::JSONCPP)
+target_link_libraries(boundard PUBLIC glfw Vulkan::Vulkan PkgConfig::JSONCPP)
 
 add_executable(square_example examples/square/main.cpp)
-target_link_libraries(square_example PRIVATE opencge)
+target_link_libraries(square_example PRIVATE boundard)
 
-add_executable(opencge_engine src/engine_main.cpp)
-target_link_libraries(opencge_engine PRIVATE opencge)
+add_executable(boundard_engine src/engine_main.cpp)
+target_link_libraries(boundard_engine PRIVATE boundard)
diff --git a/examples/square/main.cpp b/examples/square/main.cpp
index 9f17f18..5a627e2 100644
--- a/examples/square/main.cpp
+++ b/examples/square/main.cpp
@@ -1,13 +1,13 @@
 #include <cmath>
 
-#include <openceg.hpp>
+#include <boundard.hpp>
 
 namespace {
 
 void register_square_behaviors() {
-    auto& behaviors = openceg::BehaviorRegistry::getInstance();
+    auto& behaviors = boundard::BehaviorRegistry::getInstance();
 
-    behaviors.register_init("square_init", [](openceg::Actor& actor) {
+    behaviors.register_init("square_init", [](boundard::Actor& actor) {
         actor.set_position({0.0F, 0.0F});
         actor.set_facing({1.0F, 0.0F});
         if (actor.mesh() != nullptr) {
@@ -17,7 +17,7 @@ void register_square_behaviors() {
 
     behaviors.register_tick(
         "square_tick",
-        [](openceg::Actor& actor, float dt, const openceg::render::InputMap& input) {
+        [](boundard::Actor& actor, float dt, const boundard::render::InputMap& input) {
             const float t = actor.age();
             actor.set_facing({
                 std::cos(t * 1.5F),
@@ -45,5 +45,5 @@ void register_square_behaviors() {
 
 int main(int argc, char** argv) {
     register_square_behaviors();
-    return openceg::run_engine(argc, argv, "examples/square/config.ceg");
+    return boundard::run_engine(argc, argv, "examples/square/config.ceg");
 }
diff --git a/include/actor.hpp b/include/actor.hpp
index a8f8467..5b852a4 100644
--- a/include/actor.hpp
+++ b/include/actor.hpp
@@ -9,11 +9,11 @@
 #include <game.hpp>
 #include <mesh.hpp>
 
-namespace openceg::render {
+namespace boundard::render {
 class InputMap;
 }
 
-namespace openceg {
+namespace boundard {
 
 class Actor {
    private:
@@ -109,4 +109,4 @@ class Actor {
     void set_mesh(std::shared_ptr<Mesh> mesh) { mesh_ = std::move(mesh); }
 };
 
-}  // namespace openceg
+}  // namespace boundard
diff --git a/include/behavior.hpp b/include/behavior.hpp
index faa1650..db41bdb 100644
--- a/include/behavior.hpp
+++ b/include/behavior.hpp
@@ -7,11 +7,11 @@
 
 #include <actor.hpp>
 
-namespace openceg::render {
+namespace boundard::render {
 class InputMap;
 }
 
-namespace openceg {
+namespace boundard {
 
 using ActorInitHandler = std::function<void(Actor&)>;
 using ActorTickHandler = std::function<void(Actor&, float, const render::InputMap&)>;
@@ -62,4 +62,4 @@ class BehaviorRegistry {
     std::unordered_map<std::string, ActorTickHandler> tick_handlers_;
 };
 
-}  // namespace openceg
+}  // namespace boundard
diff --git a/include/openceg.hpp b/include/boundard.hpp
similarity index 100%
rename from include/openceg.hpp
rename to include/boundard.hpp
diff --git a/include/config.hpp b/include/config.hpp
index ab91692..943a64a 100644
--- a/include/config.hpp
+++ b/include/config.hpp
@@ -5,7 +5,7 @@
 #include <string>
 #include <vector>
 
-namespace openceg {
+namespace boundard {
 
 struct WindowConfig {
     int width = 800;
@@ -51,4 +51,4 @@ class ConfigLoader {
     std::string last_error_;
 };
 
-}  // namespace openceg
+}  // namespace boundard
diff --git a/include/engine.hpp b/include/engine.hpp
index aa1f234..f5b96e5 100644
--- a/include/engine.hpp
+++ b/include/engine.hpp
@@ -1,9 +1,9 @@
 #pragma once
 
-namespace openceg {
+namespace boundard {
 
 // 通用引擎入口：读取 config.ceg，实例化场景并驱动 Actor 的 init/tick。
 // 具体游戏行为通过 BehaviorRegistry 注册，因此引擎本身不内置任何游戏逻辑。
 int run_engine(int argc, char** argv, const char* default_config_path = "config.ceg");
 
-}  // namespace openceg
+}  // namespace boundard
diff --git a/include/game.hpp b/include/game.hpp
index b72fa2a..2a83f64 100644
--- a/include/game.hpp
+++ b/include/game.hpp
@@ -1,7 +1,7 @@
 #pragma once
 #include <cstddef>
 
-namespace openceg {
+namespace boundard {
 class Game {
    private:
     size_t id_cnt;
@@ -18,4 +18,4 @@ class Game {
     void launch();
     size_t new_id();
 };
-}  // namespace openceg
+}  // namespace boundard
diff --git a/include/mesh.hpp b/include/mesh.hpp
index 8137723..28f3eb7 100644
--- a/include/mesh.hpp
+++ b/include/mesh.hpp
@@ -7,7 +7,7 @@
 #include <string>
 #include <vector>
 
-namespace openceg {
+namespace boundard {
 
 // 渲染组件：描述 Actor 的几何形状、颜色和纹理占位。
 class Mesh {
@@ -48,4 +48,4 @@ class Mesh {
     std::array<float, 4> color_{1.0F, 1.0F, 1.0F, 1.0F};
 };
 
-}  // namespace openceg
+}  // namespace boundard
diff --git a/include/render.hpp b/include/render.hpp
index c865890..5510f09 100644
--- a/include/render.hpp
+++ b/include/render.hpp
@@ -13,7 +13,7 @@
 
 #include <actor.hpp>
 
-namespace openceg::render {
+namespace boundard::render {
 
 struct InputEvent {
     enum class Type {
@@ -136,4 +136,4 @@ class RenderLoop {
     std::vector<Actor*> actors_;
 };
 
-}  // namespace openceg::render
+}  // namespace boundard::render
diff --git a/src/boundard.cpp b/src/boundard.cpp
new file mode 100644
index 0000000..ae6a32a
--- /dev/null
+++ b/src/boundard.cpp
@@ -0,0 +1 @@
+#include <boundard.hpp>
diff --git a/src/config.cpp b/src/config.cpp
index 179de26..3617a49 100644
--- a/src/config.cpp
+++ b/src/config.cpp
@@ -8,7 +8,7 @@
 #include <string>
 #include <vector>
 
-namespace openceg {
+namespace boundard {
 namespace {
 
 std::string lowercase(std::string value) {
@@ -320,4 +320,4 @@ const std::string& ConfigLoader::last_error() const {
     return last_error_;
 }
 
-}  // namespace openceg
+}  // namespace boundard
diff --git a/src/engine.cpp b/src/engine.cpp
index a4bbfec..7503756 100644
--- a/src/engine.cpp
+++ b/src/engine.cpp
@@ -7,9 +7,9 @@
 #include <thread>
 #include <vector>
 
-#include <openceg.hpp>
+#include <boundard.hpp>
 
-namespace openceg {
+namespace boundard {
 
 int run_engine(int argc, char** argv, const char* default_config_path) {
     std::string config_path = default_config_path != nullptr ? default_config_path : "config.ceg";
@@ -114,4 +114,4 @@ int run_engine(int argc, char** argv, const char* default_config_path) {
     return 0;
 }
 
-}  // namespace openceg
+}  // namespace boundard
diff --git a/src/engine_main.cpp b/src/engine_main.cpp
index a0a5f2c..f840697 100644
--- a/src/engine_main.cpp
+++ b/src/engine_main.cpp
@@ -1,5 +1,5 @@
 #include <engine.hpp>
 
 int main(int argc, char** argv) {
-    return openceg::run_engine(argc, argv);
+    return boundard::run_engine(argc, argv);
 }
diff --git a/src/game.cpp b/src/game.cpp
index 3e9414b..8595d47 100644
--- a/src/game.cpp
+++ b/src/game.cpp
@@ -1,6 +1,6 @@
 #include <game.hpp>
 
-namespace openceg {
+namespace boundard {
 
 Game::Game() { id_cnt = 0; }
 Game::~Game() = default;
diff --git a/src/opencge.cpp b/src/opencge.cpp
deleted file mode 100644
index df2e194..0000000
--- a/src/opencge.cpp
+++ /dev/null
@@ -1 +0,0 @@
-#include <openceg.hpp>
diff --git a/src/render.cpp b/src/render.cpp
index bdae664..1c39128 100644
--- a/src/render.cpp
+++ b/src/render.cpp
@@ -12,7 +12,7 @@
 #include <stdexcept>
 #include <vector>
 
-namespace openceg::render {
+namespace boundard::render {
 namespace {
 
 
@@ -1337,4 +1337,4 @@ void Renderer::Impl::destroy() {
     initialized = false;
 }
 
-}  // namespace openceg::render
+}  // namespace boundard::render