diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5401f34..57136d0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -25,8 +25,7 @@ add_subdirectory(libs/glfw)
 
 target_include_directories(
     ${ENGINE_NAME}
-    PRIVATE include/tinyengine
-    PUBLIC libs/glad/include libs/stb_image libs/miniaudio # /usr/local/Cellar/glm/0.9.9.8/include
+    PUBLIC include libs/glad/include libs/stb_image libs/miniaudio # /usr/local/Cellar/glm/0.9.9.8/include
 )
 
 target_link_libraries(
@@ -54,13 +53,9 @@ target_compile_options(
 ################
 aux_source_directory(src/game GAME_SRC)
 aux_source_directory(src/game/stages GAME_SRC)
+aux_source_directory(src/game/controllers GAME_SRC)
 add_executable(${PROJECT_NAME} ${GAME_SRC})
 
-target_include_directories(
-    ${PROJECT_NAME}
-    PRIVATE include
-)
-
 target_link_libraries(
     ${PROJECT_NAME}
     PRIVATE ${ENGINE_NAME}
diff --git a/assets/shoot.wav b/assets/shoot.wav
new file mode 100644
index 0000000..cafe904
Binary files /dev/null and b/assets/shoot.wav differ
diff --git a/assets/tilesheet.png b/assets/tilesheet.png
new file mode 100644
index 0000000..3dba339
Binary files /dev/null and b/assets/tilesheet.png differ
diff --git a/include/game/action.hpp b/include/game/action.hpp
new file mode 100644
index 0000000..9d90719
--- /dev/null
+++ b/include/game/action.hpp
@@ -0,0 +1,7 @@
+#pragma once
+
+#include "tinyengine/tinyengine.hpp"
+#include "game/component.hpp"
+#include "game/entity.hpp"
+
+void Shoot(SpaceshipWeaponCmpt& weapon, const Point& dir);
diff --git a/include/game/component.hpp b/include/game/component.hpp
new file mode 100644
index 0000000..c5a3823
--- /dev/null
+++ b/include/game/component.hpp
@@ -0,0 +1,125 @@
+#pragma once
+
+#include "tinyengine/tinyengine.hpp"
+#include "game/constants.hpp"
+
+class MoveCmpt: public Component {
+public:
+    void Init(const Point& p) { position = p; }
+    void Release() {}
+
+    Point position;
+    Point oldPosition = {0, 0};
+};
+
+class MotionCmpt: public Component {
+public:
+    void Init(const Point& spd, float maxSpd) {
+        speed = spd;
+        maxSpeed = maxSpd;
+    }
+    void Release() {}
+
+    Point speed;
+    Point acceleration = {0, 0};
+
+    float maxSpeed;
+};
+
+class CollisionCmpt: public Component {
+public:
+    void Init(const Size& size) { rect.w = size.w; rect.h = size.h; }
+    void Release() {}
+
+    Rect rect;
+};
+
+class SpaceshipWeaponCmpt: public Component {
+public:
+    enum Type {
+        Orientation = 0x01,
+        FreeRotation = 0x02,
+    };
+
+    void Init(Type type,
+              Entity* owner,
+              int damage,
+              float shootSpeed,
+              float maxSpeed,
+              float duration) {
+        this->type = type;
+        this->owner = owner;
+        this->damage = damage;
+        this->shootSpeed = shootSpeed;
+        this->shootDuration = duration;
+        this->maxSpeed = maxSpeed;
+    }
+
+    void Release() {}
+    bool IsCoolDowning() const { return coolDown >= 0; }
+    Entity* ShootBullet(const Point& dir);
+
+    Type type;
+    int damage;
+    float shootSpeed;
+    float shootDuration;
+    float coolDown;
+    float maxSpeed;
+    Entity* owner;
+};
+
+class SpaceshipArmorCmpt: public Component {
+public:
+    void Init(int defence, float duration) {
+        this->defence = defence;
+        this->recoverDuration = duration;
+    }
+
+    int defence;
+    float recoverDuration;
+};
+
+class LifeCmpt: public Component {
+public:
+    void Init(int hp) { this->hp = hp; }
+    void Release() {}
+
+    int hp;
+};
+
+class RenderCmpt: public Component {
+public:
+    enum Type {
+        TypeTexture = 1,
+        TypeTile,
+    };
+
+    void Init(Texture* image) {
+        texture = image;
+        type = TypeTexture;
+    }
+    void Init(const Tile& tile) {
+        this->tile = tile;
+        type = TypeTile;
+    }
+    void Release() {}
+
+    Type type;
+    union {
+        Texture* texture;
+        Tile tile;
+    };
+};
+
+class BulletCmpt: public Component {
+public:
+    inline void Init(int damage, Entity* owner) {
+        this->owner = owner;
+        this->damage = damage;
+    }
+    inline void Release() override {}
+
+    int damage;
+    Entity* owner;
+    bool alive;
+};
diff --git a/include/game/constants.hpp b/include/game/constants.hpp
new file mode 100644
index 0000000..8f0c186
--- /dev/null
+++ b/include/game/constants.hpp
@@ -0,0 +1,9 @@
+#pragma once
+
+constexpr float FreightMaxSpeed = 100;
+constexpr float LazerDamage = 2;
+constexpr float LazerShooterSpeed = 1000;
+constexpr float LazerShooterMaxSpeed = 1000;
+constexpr float LazerShooterCooldown = 0.3;
+constexpr int GameWindowWidth = 1024;
+constexpr int GameWindowHeight = 720;
diff --git a/include/game/controller.hpp b/include/game/controller.hpp
new file mode 100644
index 0000000..35a95ee
--- /dev/null
+++ b/include/game/controller.hpp
@@ -0,0 +1,8 @@
+#pragma once
+
+class Controller {
+public:
+    virtual ~Controller() = default;
+
+    virtual void Update(float dt) = 0;
+};
diff --git a/include/game/controllers/spaceship_controller.hpp b/include/game/controllers/spaceship_controller.hpp
new file mode 100644
index 0000000..ccd366b
--- /dev/null
+++ b/include/game/controllers/spaceship_controller.hpp
@@ -0,0 +1,16 @@
+#pragma once
+
+#include "game/controller.hpp"
+#include "tinyengine/tinyengine.hpp"
+#include "game/entity.hpp"
+#include "game/component.hpp"
+#include "game/action.hpp"
+
+class FreeRotationController: public Controller {
+public:
+    FreeRotationController(Entity* entity);
+    void Update(float dt) override;
+
+private:
+    Entity* entity_;
+};
diff --git a/include/game/entity.hpp b/include/game/entity.hpp
new file mode 100644
index 0000000..36d17ab
--- /dev/null
+++ b/include/game/entity.hpp
@@ -0,0 +1,8 @@
+#pragma once
+
+#include "tinyengine/tinyengine.hpp"
+#include "game/component.hpp"
+#include "game/global.hpp"
+
+Entity* CreateFreightShip();
+Entity* CreateBullet(int damage, Entity* owner, float maxSpeedß);
diff --git a/include/game/global.hpp b/include/game/global.hpp
new file mode 100644
index 0000000..7f07ce7
--- /dev/null
+++ b/include/game/global.hpp
@@ -0,0 +1,18 @@
+#pragma once
+
+#include "tinyengine/tinyengine.hpp"
+#include "game/quick_list.hpp"
+
+extern Context ECSContext;
+extern SystemManager SystemMgr;
+extern std::unordered_map<std::string, Unique<TileSheet>> TileSheets;
+extern std::unordered_map<std::string, Unique<Sound>> Sounds;
+extern std::string TileSheetName;
+
+extern QuickList<Entity*> Bullets;
+
+using EntityList = std::vector<Entity*>;
+
+extern EntityList Entities;
+
+void LoadResources();
diff --git a/include/game/quick_list.hpp b/include/game/quick_list.hpp
new file mode 100644
index 0000000..c55e304
--- /dev/null
+++ b/include/game/quick_list.hpp
@@ -0,0 +1,45 @@
+#pragma once
+
+#include "tinyengine/tinyengine.hpp"
+
+template <typename T>
+class QuickList final {
+public:
+    void Add(const T& elem) {
+        datas_.push_back(elem);
+    }
+
+    void RemoveAll(std::function<bool(const T&)> func) {
+        int idx = 0;
+        while (idx < datas_.size()) {
+            if (func(datas_[idx]) && datas_.size() > idx) {
+                std::swap(datas_[idx], datas_[datas_.size() - 1]);
+                datas_.pop_back();
+            } else {
+                idx ++;
+            }
+        }
+    }
+    void Clear() { datas_.clear(); }
+
+    // for debug
+    void PrintAll(std::function<void(const T&)> func = nullptr) {
+        printf("QuickList: ");
+        for (auto& elem : datas_) {
+            if (func == nullptr) {
+                std::cout << elem << ", ";
+            } else {
+                func(elem);
+            }
+        }
+        printf("\n");
+    }
+
+    using const_iterator = typename std::vector<T>::const_iterator;
+
+    const_iterator begin() const { return datas_.begin(); }
+    const_iterator end() const { return datas_.end(); }
+
+private:
+    std::vector<T> datas_;
+};
diff --git a/include/game/stages/space.hpp b/include/game/stages/space.hpp
new file mode 100644
index 0000000..3faefc6
--- /dev/null
+++ b/include/game/stages/space.hpp
@@ -0,0 +1,19 @@
+#pragma once
+
+#include "tinyengine/tinyengine.hpp"
+#include "game/global.hpp"
+#include "game/entity.hpp"
+#include "game/system.hpp"
+#include "game/controllers/spaceship_controller.hpp"
+
+class SpaceScence: public Scence {
+public:
+    void OnInit() override;
+    void OnUpdate(float dt) override;
+    void OnRender() override;
+    void OnQuit() override;
+
+private:
+    Entity* spaceship_;
+    Unique<FreeRotationController> controller_;
+};
diff --git a/include/game/system.hpp b/include/game/system.hpp
new file mode 100644
index 0000000..a250713
--- /dev/null
+++ b/include/game/system.hpp
@@ -0,0 +1,41 @@
+#pragma once
+
+#include "tinyengine/ecs/system.hpp"
+#include "tinyengine/tinyengine.hpp"
+#include "game/global.hpp"
+#include "game/component.hpp"
+#include "game/entity.hpp"
+
+class PhysicalSystem: public UpdateSystem {
+public:
+    void Update(float dt) override;
+
+private:
+    void physicalStep(Entity* entity, float dt, MoveCmpt&, MotionCmpt&);
+};
+
+class ColliRectCorrectSystem: public UpdateSystem {
+public:
+    void Update(float dt) override;
+
+private:
+    void correctColliRect(MoveCmpt&, CollisionCmpt&);
+};
+
+class CleanupSystem: public UpdateSystem {
+public:
+    void Update(float dt) override;
+};
+
+class BulletCooldownSystem: public UpdateSystem {
+public:
+    void Update(float dt) override;
+};
+
+class RenderEntitySystem: public RenderSystem {
+public:
+    void Render() override;
+
+private:
+    void renderEntity(Entity* entity, const RenderCmpt&);
+};
diff --git a/include/tinyengine/ecs/component.hpp b/include/tinyengine/ecs/component.hpp
index 668a4f1..43b87f2 100644
--- a/include/tinyengine/ecs/component.hpp
+++ b/include/tinyengine/ecs/component.hpp
@@ -1,7 +1,7 @@
 _Pragma("once")
 
-#include "pch.hpp"
-#include "pool.hpp"
+#include "tinyengine/pch.hpp"
+#include "tinyengine/pool.hpp"
 
 using ComponentId = unsigned int;
 
diff --git a/include/tinyengine/ecs/context.hpp b/include/tinyengine/ecs/context.hpp
index 1332c26..317f452 100644
--- a/include/tinyengine/ecs/context.hpp
+++ b/include/tinyengine/ecs/context.hpp
@@ -1,6 +1,6 @@
 _Pragma("once")
 
-#include "pool.hpp"
+#include "tinyengine/pool.hpp"
 #include "component.hpp"
 
 class Entity;
diff --git a/include/tinyengine/ecs/ecs.hpp b/include/tinyengine/ecs/ecs.hpp
index 606c363..c1f8772 100644
--- a/include/tinyengine/ecs/ecs.hpp
+++ b/include/tinyengine/ecs/ecs.hpp
@@ -3,3 +3,4 @@ _Pragma("once")
 #include "entity.hpp"
 #include "component.hpp"
 #include "context.hpp"
+#include "system.hpp"
diff --git a/include/tinyengine/ecs/entity.hpp b/include/tinyengine/ecs/entity.hpp
index efa66fa..0700803 100644
--- a/include/tinyengine/ecs/entity.hpp
+++ b/include/tinyengine/ecs/entity.hpp
@@ -1,7 +1,7 @@
-_Pragma("once")
+#pragma once
 
-#include "pch.hpp"
-#include "pool.hpp"
+#include "tinyengine/pch.hpp"
+#include "tinyengine/pool.hpp"
 #include "component.hpp"
 #include "context.hpp"
 
diff --git a/include/tinyengine/ecs/system.hpp b/include/tinyengine/ecs/system.hpp
new file mode 100644
index 0000000..40eb5df
--- /dev/null
+++ b/include/tinyengine/ecs/system.hpp
@@ -0,0 +1,48 @@
+#pragma once
+
+#include "entity.hpp"
+#include "tinyengine/tinyengine.hpp"
+
+class System {
+public:
+    virtual ~System() = default;
+
+    bool IsWorking() const { return active_; }
+    void StartWork() { active_ = true; }
+    void StopWork() { active_ = false; }
+
+private:
+    bool active_ = true;
+};
+
+class UpdateSystem: public System {
+public:
+    virtual ~UpdateSystem() = default;
+
+    virtual void Update(float dt) = 0;
+};
+
+class RenderSystem: public System {
+public:
+    virtual ~RenderSystem() = default;
+
+    virtual void Render() = 0;
+};
+
+
+class SystemManager final {
+public:
+    void AddUpdateSystem(UpdateSystem* system) { updateSystems_.emplace_back(system); }
+    void AddRenderSystem(RenderSystem* system) { renderSystems_.emplace_back(system); }
+
+    void Update(float dt);
+    void Render();
+
+    void Clear() { ClearUpdateSystems(); ClearRenderSystems(); }
+    void ClearUpdateSystems() { updateSystems_.clear(); }
+    void ClearRenderSystems() { renderSystems_.clear(); }
+
+private:
+    std::vector<Ref<UpdateSystem>> updateSystems_;
+    std::vector<Ref<RenderSystem>> renderSystems_;
+};
diff --git a/include/tinyengine/engine.hpp b/include/tinyengine/engine.hpp
index 1e32472..88ddb1a 100644
--- a/include/tinyengine/engine.hpp
+++ b/include/tinyengine/engine.hpp
@@ -1,4 +1,5 @@
 #pragma once
+
 #include "pch.hpp"
 #include "libmath.hpp"
 #include "renderer.hpp"
diff --git a/include/tinyengine/event.hpp b/include/tinyengine/event.hpp
index f5da7ca..9781b8e 100644
--- a/include/tinyengine/event.hpp
+++ b/include/tinyengine/event.hpp
@@ -2,3 +2,9 @@
 #include "renderer.hpp"
 
 void OnWindowResize(GLFWwindow* window, int width, int height);
+
+bool IsKeyPressing(int key);
+
+bool IsLeftPressing();
+bool IsRightPressing();
+Point GetMousePosition();
diff --git a/include/tinyengine/pch.hpp b/include/tinyengine/pch.hpp
index b171621..29f5a2e 100644
--- a/include/tinyengine/pch.hpp
+++ b/include/tinyengine/pch.hpp
@@ -2,9 +2,10 @@
 
 #include "glad/gl.h"
 #include "GLFW/glfw3.h"
-#include "stb_image.h"
+
 #include <string>
 #include <vector>
+#include <list>
 #include <iostream>
 #include <memory>
 #include <fstream>
@@ -22,6 +23,7 @@
 #include <cassert>
 
 #include "miniaudio.h"
+#include "stb_image.h"
 
 #ifdef USE_GLM
 #include "glm/glm.hpp"
diff --git a/include/tinyengine/tinyengine.hpp b/include/tinyengine/tinyengine.hpp
index 7b64e94..02e5193 100644
--- a/include/tinyengine/tinyengine.hpp
+++ b/include/tinyengine/tinyengine.hpp
@@ -11,3 +11,4 @@
 #include "inner_bmpfont.hpp"
 #include "audio.hpp"
 #include "tilesheet.hpp"
+#include "ecs/ecs.hpp"
diff --git a/libs/stb_image/stbi_image.cpp b/libs/stb_image/stbi_image.c
similarity index 100%
rename from libs/stb_image/stbi_image.cpp
rename to libs/stb_image/stbi_image.c
diff --git a/src/game/action.cpp b/src/game/action.cpp
new file mode 100644
index 0000000..0cc8235
--- /dev/null
+++ b/src/game/action.cpp
@@ -0,0 +1,14 @@
+#include "game/action.hpp"
+
+void Shoot(SpaceshipWeaponCmpt& weapon, const Point& dir) {
+    if (weapon.IsCoolDowning()) return;
+
+    Point playerCenterPos = weapon.owner->Get<MoveCmpt>()->position;
+
+    auto bullet = weapon.ShootBullet(Normalize(dir) * weapon.shootSpeed);
+    Bullets.Add(bullet);
+
+    weapon.coolDown = weapon.shootDuration;
+
+    Sounds["shoot"]->Play();
+}
diff --git a/src/game/component.cpp b/src/game/component.cpp
new file mode 100644
index 0000000..48d01f0
--- /dev/null
+++ b/src/game/component.cpp
@@ -0,0 +1,9 @@
+#include "game/component.hpp"
+#include "game/entity.hpp"
+
+Entity* SpaceshipWeaponCmpt::ShootBullet(const Point& dir) {
+    Entity* bullet = CreateBullet(damage, owner, maxSpeed);
+    bullet->Use<MotionCmpt>()->speed = Normalize(dir) * shootSpeed;
+    bullet->Use<MoveCmpt>()->position = owner->Get<MoveCmpt>()->position;
+    return bullet;
+}
diff --git a/src/game/controllers/spaceship_controller.cpp b/src/game/controllers/spaceship_controller.cpp
new file mode 100644
index 0000000..770d99e
--- /dev/null
+++ b/src/game/controllers/spaceship_controller.cpp
@@ -0,0 +1,37 @@
+#include "game/controllers/spaceship_controller.hpp"
+#include "tinyengine/event.hpp"
+
+FreeRotationController::FreeRotationController(Entity* entity)
+    : entity_(entity) {}
+
+void FreeRotationController::Update(float dt) {
+    const float spd = 100;
+    auto motionCmpt = entity_->Use<MotionCmpt>();
+    if (IsKeyPressing(GLFW_KEY_A)) {
+        // motionCmpt->speed += Point{-spd, 0};
+        motionCmpt->acceleration += Point{-spd, 0};
+        // motionCmpt->speed.x = -spd;
+    }
+    if (IsKeyPressing(GLFW_KEY_D)) {
+        // motionCmpt->speed += Point{spd, 0};
+        motionCmpt->acceleration += Point{spd, 0};
+        // motionCmpt->speed.x = spd;
+    }
+    if (IsKeyPressing(GLFW_KEY_S)) {
+        // motionCmpt->speed += Point{0, spd};
+        motionCmpt->acceleration += Point{0, spd};
+        // motionCmpt->speed.y = spd;
+    }
+    if (IsKeyPressing(GLFW_KEY_W)) {
+        // motionCmpt->speed += Point{0, -spd};
+        motionCmpt->acceleration += Point{0, -spd};
+        // motionCmpt->speed.y = -spd;
+    }
+
+    if (IsLeftPressing()) {
+        if (entity_->Has<SpaceshipWeaponCmpt>()) {
+            Shoot(*entity_->Use<SpaceshipWeaponCmpt>(),
+                  GetMousePosition() - entity_->Get<MoveCmpt>()->position);
+        }
+    }
+}
diff --git a/src/game/entity.cpp b/src/game/entity.cpp
new file mode 100644
index 0000000..f9a363b
--- /dev/null
+++ b/src/game/entity.cpp
@@ -0,0 +1,24 @@
+#include "game/entity.hpp"
+
+Entity* CreateFreightShip() {
+    Entity* entity = ECSContext.CreateEntity();
+    entity->Add<MoveCmpt>(Point{0, 0});
+    entity->Add<MotionCmpt>(Point{0, 0}, FreightMaxSpeed);
+    entity->Add<RenderCmpt>(TileSheets[TileSheetName]->GetTile(0, 0));
+    entity->Add<SpaceshipWeaponCmpt>(SpaceshipWeaponCmpt::Orientation,
+                                     entity,
+                                     LazerDamage,
+                                     LazerShooterSpeed,
+                                     LazerShooterMaxSpeed,
+                                     LazerShooterCooldown);
+    return entity;
+}
+
+Entity* CreateBullet(int damage, Entity* owner, float maxSpeed) {
+    Entity* entity = ECSContext.CreateEntity();
+    entity->Add<MoveCmpt>(Point{0, 0});
+    entity->Add<MotionCmpt>(Point{0, 0}, maxSpeed);
+    entity->Add<RenderCmpt>(TileSheets[TileSheetName]->GetTile(0, 1));
+    entity->Add<BulletCmpt>(damage, owner);
+    return entity;
+}
diff --git a/src/game/global.cpp b/src/game/global.cpp
new file mode 100644
index 0000000..3a76481
--- /dev/null
+++ b/src/game/global.cpp
@@ -0,0 +1,22 @@
+#include "game/global.hpp"
+
+Context ECSContext;
+SystemManager SystemMgr;
+std::unordered_map<std::string, Unique<TileSheet>> TileSheets;
+std::unordered_map<std::string, Unique<Sound>> Sounds;
+std::string TileSheetName = "TileSheet";
+QuickList<Entity*> Bullets;
+EntityList Entities;
+
+void loadImages() {
+    TileSheets[TileSheetName] = std::make_unique<TileSheet>("assets/tilesheet.png", 8, 8);
+}
+
+void loadSounds() {
+    Sounds["shoot"] = std::make_unique<Sound>("assets/shoot.wav");
+}
+
+void LoadResources() {
+    loadImages();
+    loadSounds();
+}
diff --git a/src/game/main.cpp b/src/game/main.cpp
index bc0a03b..b0ab3cb 100644
--- a/src/game/main.cpp
+++ b/src/game/main.cpp
@@ -1,3 +1,5 @@
 #include "game/stages/gamelogo.hpp"
+#include "game/stages/space.hpp"
+#include "game/constants.hpp"
 
-RUN_WINDOW("Space Sector", 1024, 720, GameLogoScence)
+RUN_WINDOW("Space Sector", GameWindowWidth, GameWindowHeight, SpaceScence)
diff --git a/src/game/stages/space.cpp b/src/game/stages/space.cpp
new file mode 100644
index 0000000..1e996ba
--- /dev/null
+++ b/src/game/stages/space.cpp
@@ -0,0 +1,32 @@
+#include "game/stages/space.hpp"
+
+void SpaceScence::OnInit() {
+    Renderer::SetClearColor(Color{0, 0, 0, 255});
+    LoadResources();
+
+    spaceship_ = CreateFreightShip();
+    Entities.push_back(spaceship_);
+    spaceship_->Use<MoveCmpt>()->position = Point{400, 400};
+
+    controller_.reset(new FreeRotationController(spaceship_));
+
+    SystemMgr.Clear();
+    SystemMgr.AddRenderSystem(new RenderEntitySystem);
+    SystemMgr.AddUpdateSystem(new BulletCooldownSystem);
+    SystemMgr.AddUpdateSystem(new PhysicalSystem);
+    SystemMgr.AddUpdateSystem(new ColliRectCorrectSystem);
+    SystemMgr.AddUpdateSystem(new CleanupSystem);
+}
+
+void SpaceScence::OnUpdate(float dt) {
+    controller_->Update(dt);
+    SystemMgr.Update(dt);
+}
+
+void SpaceScence::OnRender() {
+    SystemMgr.Render();
+}
+
+void SpaceScence::OnQuit() {
+
+}
diff --git a/src/game/system.cpp b/src/game/system.cpp
new file mode 100644
index 0000000..62f6b0c
--- /dev/null
+++ b/src/game/system.cpp
@@ -0,0 +1,98 @@
+#include "game/system.hpp"
+
+void PhysicalSystem::Update(float dt) {
+    for (auto& entity: Entities) {
+        if (entity->Has<MoveCmpt>() && entity->Has<MotionCmpt>()) {
+            // update entities
+            physicalStep(entity, dt,
+                         *entity->Use<MoveCmpt>(),
+                         *entity->Use<MotionCmpt>());
+
+            // update bullets
+            for (auto& bullet : Bullets) {
+                if (bullet->Has<MoveCmpt>() && bullet->Has<MotionCmpt>()) {
+                    physicalStep(bullet, dt,
+                                 *bullet->Use<MoveCmpt>(),
+                                 *bullet->Use<MotionCmpt>());
+                }
+            }
+
+        }
+    }
+}
+
+void PhysicalSystem::physicalStep(Entity* entity,
+                                  float dt,
+                                  MoveCmpt& moveCmpt,
+                                  MotionCmpt& motionCmpt) {
+    moveCmpt.oldPosition = moveCmpt.position;
+
+    motionCmpt.speed += motionCmpt.acceleration * dt;
+    if (Len(motionCmpt.speed) > motionCmpt.maxSpeed) {
+        motionCmpt.speed = Normalize(motionCmpt.speed) * motionCmpt.maxSpeed;
+    }
+
+    moveCmpt.position += motionCmpt.speed * dt + 0.5 * motionCmpt.acceleration * dt * dt;
+
+    motionCmpt.acceleration = Point{0, 0};
+}
+
+void ColliRectCorrectSystem::Update(float dt) {
+    for (auto& entity: Entities) {
+        if (entity->Has<CollisionCmpt>() &&
+            entity->Has<MoveCmpt>()) {
+            correctColliRect(*entity->Use<MoveCmpt>(),
+                             *entity->Use<CollisionCmpt>());
+        }
+    }
+}
+
+void ColliRectCorrectSystem::correctColliRect(MoveCmpt& move, CollisionCmpt& collision) {
+    collision.rect.x = move.position.x;
+    collision.rect.y = move.position.y;
+}
+
+void CleanupSystem::Update(float dt) {
+    using EntityPtr = Entity*;
+    Bullets.RemoveAll([](const EntityPtr& entity){
+        return !IsPointInRect(entity->Get<MoveCmpt>()->position,
+                              Rect{0, 0, GameWindowWidth, GameWindowHeight});
+    });
+}
+
+void BulletCooldownSystem::Update(float dt) {
+    for (auto& entity : Entities) {
+        if (entity->Has<SpaceshipWeaponCmpt>()) {
+            auto weapon = entity->Use<SpaceshipWeaponCmpt>();
+            if (weapon->coolDown >= 0) {
+                weapon->coolDown -= dt;
+            }
+        }
+    }
+}
+
+void RenderEntitySystem::Render() {
+    for (auto& entity: Entities) {
+        if (entity->Has<RenderCmpt>()) {
+            renderEntity(entity, *entity->Get<RenderCmpt>());
+        }
+    }
+    
+    for (auto& bullet: Bullets) {
+        renderEntity(bullet, *bullet->Get<RenderCmpt>());
+    }
+}
+
+void RenderEntitySystem::renderEntity(Entity* entity, const RenderCmpt& renderCmpt) {
+    if (entity->Has<MoveCmpt>()) {
+        auto& pos = entity->Get<MoveCmpt>()->position;
+        if (renderCmpt.type == RenderCmpt::TypeTexture) {
+            Renderer::DrawTexture(renderCmpt.texture,
+                                  nullptr,
+                                  pos);
+        } else {
+            Renderer::DrawTile(renderCmpt.tile,
+                               pos);
+        }
+    }
+}
diff --git a/src/tinyengine/audio.cpp b/src/tinyengine/audio.cpp
index 5de48e6..4b71aef 100644
--- a/src/tinyengine/audio.cpp
+++ b/src/tinyengine/audio.cpp
@@ -1,4 +1,4 @@
-#include "audio.hpp"
+#include "tinyengine/audio.hpp"
 
 ma_engine AudioEngine;
 
diff --git a/src/tinyengine/camera.cpp b/src/tinyengine/camera.cpp
index cf5af26..c484974 100644
--- a/src/tinyengine/camera.cpp
+++ b/src/tinyengine/camera.cpp
@@ -1,4 +1,4 @@
-#include "camera.hpp"
+#include "tinyengine/camera.hpp"
 
 bool Camera::TryCalcView() {
     if (dirty_) {
diff --git a/src/tinyengine/ecs/component.cpp b/src/tinyengine/ecs/component.cpp
index 45e16b9..5c837b0 100644
--- a/src/tinyengine/ecs/component.cpp
+++ b/src/tinyengine/ecs/component.cpp
@@ -1,5 +1,5 @@
-#include "ecs/component.hpp"
-#include "ecs/context.hpp"
+#include "tinyengine/ecs/component.hpp"
+#include "tinyengine/ecs/context.hpp"
 
 ComponentId ComponentIdx::count_ = 0;
 
diff --git a/src/tinyengine/ecs/context.cpp b/src/tinyengine/ecs/context.cpp
index a6e1f5f..46d0ff6 100644
--- a/src/tinyengine/ecs/context.cpp
+++ b/src/tinyengine/ecs/context.cpp
@@ -1,5 +1,5 @@
-#include "ecs/context.hpp"
-#include "ecs/entity.hpp"
+#include "tinyengine/ecs/context.hpp"
+#include "tinyengine/ecs/entity.hpp"
 
 Pool<Entity>::ElemContainer& Context::GetEntities() {
     return entities_.GetElems();
diff --git a/src/tinyengine/ecs/system.cpp b/src/tinyengine/ecs/system.cpp
new file mode 100644
index 0000000..05ca7fb
--- /dev/null
+++ b/src/tinyengine/ecs/system.cpp
@@ -0,0 +1,17 @@
+#include "tinyengine/ecs/system.hpp"
+
+void SystemManager::Update(float dt) {
+    for (auto& system: updateSystems_) {
+        if (system->IsWorking()) {
+            system->Update(dt);
+        }
+    }
+}
+
+void SystemManager::Render() {
+    for (auto& system: renderSystems_) {
+        if (system->IsWorking()) {
+            system->Render();
+        }
+    }
+}
diff --git a/src/tinyengine/engine.cpp b/src/tinyengine/engine.cpp
index 04e6754..d0ed153 100644
--- a/src/tinyengine/engine.cpp
+++ b/src/tinyengine/engine.cpp
@@ -1,4 +1,4 @@
-#include "engine.hpp"
+#include "tinyengine/engine.hpp"
 
 void error_callback(int error, const char* description) {
     fprintf(stderr, "Error: %s\n", description);
diff --git a/src/tinyengine/event.cpp b/src/tinyengine/event.cpp
index 67d7572..f560699 100644
--- a/src/tinyengine/event.cpp
+++ b/src/tinyengine/event.cpp
@@ -1,5 +1,24 @@
-#include "event.hpp"
+#include "tinyengine/event.hpp"
+#include "tinyengine/engine.hpp"
 
 void OnWindowResize(GLFWwindow* window, int width, int height) {
     Renderer::SetViewport(0, 0, width, height);
 }
+
+bool IsKeyPressing(int key) {
+    return glfwGetKey(engine.GetWindow(), key) == GLFW_PRESS;
+}
+
+bool IsLeftPressing() {
+    return glfwGetMouseButton(engine.GetWindow(), GLFW_MOUSE_BUTTON_LEFT) == GLFW_PRESS;
+}
+
+bool IsRightPressing() {
+    return glfwGetMouseButton(engine.GetWindow(), GLFW_MOUSE_BUTTON_RIGHT) == GLFW_PRESS;
+}
+
+Point GetMousePosition() {
+    double x, y;
+    glfwGetCursorPos(engine.GetWindow(), &x, &y);
+    return Point{float(x), float(y)};
+}
diff --git a/src/tinyengine/glhelpfunc.cpp b/src/tinyengine/glhelpfunc.cpp
index 2e95254..a4f8fd6 100644
--- a/src/tinyengine/glhelpfunc.cpp
+++ b/src/tinyengine/glhelpfunc.cpp
@@ -1,4 +1,4 @@
-#include "glhelpfunc.hpp"
+#include "tinyengine/glhelpfunc.hpp"
 
 #define CASE(e) case e: return #e;
 
diff --git a/src/tinyengine/inner_bmpfont.cpp b/src/tinyengine/inner_bmpfont.cpp
index 781f203..a5378e9 100644
--- a/src/tinyengine/inner_bmpfont.cpp
+++ b/src/tinyengine/inner_bmpfont.cpp
@@ -1,4 +1,4 @@
-#include "inner_bmpfont.hpp"
+#include "tinyengine/inner_bmpfont.hpp"
 
 InnerBmpFont::InnerBmpFont() {
     saveChar('0',
diff --git a/src/tinyengine/libmath.cpp b/src/tinyengine/libmath.cpp
index 6c904ff..0522db2 100644
--- a/src/tinyengine/libmath.cpp
+++ b/src/tinyengine/libmath.cpp
@@ -1,4 +1,4 @@
-#include "libmath.hpp"
+#include "tinyengine/libmath.hpp"
 
 Point operator+(const Point& p1, const Point& p2) {
     return Point{p1.x + p2.x, p1.y + p2.y};
diff --git a/src/tinyengine/renderer.cpp b/src/tinyengine/renderer.cpp
index db85968..188e6f7 100644
--- a/src/tinyengine/renderer.cpp
+++ b/src/tinyengine/renderer.cpp
@@ -1,5 +1,5 @@
-#include "renderer.hpp"
-#include "engine.hpp"
+#include "tinyengine/renderer.hpp"
+#include "tinyengine/engine.hpp"
 
 Color Renderer::color_ = {255, 255, 255, 255};
 
diff --git a/src/tinyengine/shader.cpp b/src/tinyengine/shader.cpp
index ebe57e5..c73f988 100644
--- a/src/tinyengine/shader.cpp
+++ b/src/tinyengine/shader.cpp
@@ -1,4 +1,4 @@
-#include "shader.hpp"
+#include "tinyengine/shader.hpp"
 
 GLuint createShader(const std::string& code, GLenum type) {
     GLuint shader;
diff --git a/src/tinyengine/texture.cpp b/src/tinyengine/texture.cpp
index f91affe..55b5acf 100644
--- a/src/tinyengine/texture.cpp
+++ b/src/tinyengine/texture.cpp
@@ -1,4 +1,4 @@
-#include "texture.hpp"
+#include "tinyengine/texture.hpp"
 
 Texture::Texture(const std::string& filename) {
     int w, h, channels;
diff --git a/src/tinyengine/tilesheet.cpp b/src/tinyengine/tilesheet.cpp
index 4a558e4..5e9a888 100644
--- a/src/tinyengine/tilesheet.cpp
+++ b/src/tinyengine/tilesheet.cpp
@@ -1,4 +1,4 @@
-#include "tilesheet.hpp"
+#include "tinyengine/tilesheet.hpp"
 
 TileSheet::TileSheet(const std::string& filename, int x, int y) {
     texture_.reset(new Texture(filename));
diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index d0434bd..504d3f1 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -6,7 +6,8 @@ macro(AddTest TEST_NAME TEST_FILE)
     target_include_directories(${TEST_NAME} PRIVATE ${CMAKE_SOURCE_DIR}/include)
 endmacro()
 
-AddTest(math math.cpp ${ENGINE_NAME})
-AddTest(renderer renderer.cpp ${ENGINE_NAME})
-AddTest(innerBmpFont innerBmpFont.cpp ${ENGINE_NAME})
-AddTest(audio audio.cpp ${ENGINE_NAME})
+AddTest(math math.cpp                   ${ENGINE_NAME})
+AddTest(renderer renderer.cpp           ${ENGINE_NAME})
+AddTest(innerBmpFont innerBmpFont.cpp   ${ENGINE_NAME})
+AddTest(audio audio.cpp                 ${ENGINE_NAME})
+AddTest(quicklist quicklist.cpp         ${ENGINE_NAME})
diff --git a/tests/quicklist.cpp b/tests/quicklist.cpp
new file mode 100644
index 0000000..765ee81
--- /dev/null
+++ b/tests/quicklist.cpp
@@ -0,0 +1,24 @@
+#include "game/quick_list.hpp"
+
+int main() {
+    QuickList<int> list;
+    list.Add(1);
+    list.Add(3);
+    list.Add(2);
+    list.Add(5);
+
+    list.PrintAll();
+
+    list.RemoveAll([](const int& elem){
+            return elem < 3;
+     });
+
+    list.PrintAll();
+
+    list.RemoveAll([](const int& elem){
+            return elem < 10;
+    });
+
+    list.PrintAll();
+}
+