diff --git a/CMakeLists.txt b/CMakeLists.txt
index 22e17d0..a36a823 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -215,6 +215,27 @@ add_executable(Dicewars_Siedler src/main.cpp
         src/engine/renderer/model/GuiTextureBuilder.h
         src/game/ui/components/UiBuildingMenuContainer.cpp
         src/game/ui/components/UiBuildingMenuContainer.h
+        src/engine/core/inputsOutputs/stateControl/states/IState.cpp
+        src/engine/core/inputsOutputs/stateControl/states/IState.h
+        src/engine/core/inputsOutputs/stateControl/InputUser.cpp
+        src/engine/core/inputsOutputs/stateControl/InputUser.h
+        src/engine/core/inputsOutputs/inputs/Keyboard.cpp
+        src/engine/core/inputsOutputs/inputs/Keyboard.h
+        src/engine/core/inputsOutputs/inputs/Mouse.cpp
+        src/engine/core/inputsOutputs/inputs/Mouse.h
+        src/engine/core/inputsOutputs/inputs/MouseButton.h
+        src/engine/core/inputsOutputs/stateControl/RegisteredUsers.cpp
+        src/engine/core/inputsOutputs/stateControl/RegisteredUsers.h
+        src/engine/core/inputsOutputs/stateControl/StateManager.cpp
+        src/engine/core/inputsOutputs/stateControl/StateManager.h
+        src/engine/core/inputsOutputs/stateControl/states/State.cpp
+        src/engine/core/inputsOutputs/stateControl/states/State.h
+        src/engine/core/inputsOutputs/stateControl/states/EmptyState.cpp
+        src/engine/core/inputsOutputs/stateControl/states/EmptyState.h
+        src/engine/core/inputsOutputs/stateControl/inputUser/GameInputUser.cpp
+        src/engine/core/inputsOutputs/stateControl/inputUser/GameInputUser.h
+        src/engine/core/inputsOutputs/stateControl/StateRegistry.cpp
+        src/engine/core/inputsOutputs/stateControl/StateRegistry.h
 )
 
 target_compile_options(Dicewars_Siedler PRIVATE
diff --git a/src/engine/core/Application.cpp b/src/engine/core/Application.cpp
index c3d1a4f..2558ff8 100644
--- a/src/engine/core/Application.cpp
+++ b/src/engine/core/Application.cpp
@@ -7,6 +7,9 @@
 #include "EngineTime.h"
 #include "../layer/Layer.h"
 #include "../platform/glfw/InputManager.h"
+#include "inputsOutputs/stateControl/StateRegistry.h"
+#include "inputsOutputs/stateControl/states/EmptyState.h"
+#include "inputsOutputs/stateControl/states/State.h"
 
 Application* Application::instance = nullptr;
 
@@ -16,7 +19,7 @@ void Application::updateTime() {
     EngineTime::totalTime += EngineTime::deltaTime;
     lastFrame = now;
 
-    printf("Frametime: %f\n", EngineTime::deltaTime);
+    // printf("Frametime: %f\n", EngineTime::deltaTime);
 }
 
 void Application::pushLayer(Layer* layer) {
@@ -35,6 +38,9 @@ Application::Application()
     window_props.VSync = true;
 
     window.reset(Window::Create(window_props));
+    keyboard = std::make_unique<Keyboard>(*window);
+    mouse = std::make_unique<Mouse>(*window);
+    stateManager = std::make_unique<StateManager>(StateRegistry::get().empty, StateRegistry::get().game);
 }
 
 Application::~Application()
@@ -51,6 +57,10 @@ void Application::run() {
         }
         window->OnUpdate();
         InputManager::update();
+
+        mouse->update();
+        keyboard->update();
+        stateManager->updateState();
     }
 }
 
diff --git a/src/engine/core/Application.h b/src/engine/core/Application.h
index 860f8fc..d15915f 100644
--- a/src/engine/core/Application.h
+++ b/src/engine/core/Application.h
@@ -9,6 +9,10 @@
 
 #include "Window.h"
 #include "events/EventBus.h"
+#include "inputsOutputs/inputs/Keyboard.h"
+#include "inputsOutputs/inputs/Mouse.h"
+#include "inputsOutputs/stateControl/StateManager.h"
+#include "inputsOutputs/stateControl/states/State.h"
 
 
 class Layer;
@@ -25,6 +29,11 @@ public:
     static Application& getInstance();
     [[nodiscard]] Window& getWindow() const {return *window;}
     EventBus& getEventBus() {return eventBus;}
+    std::unique_ptr<Keyboard> keyboard;
+    std::unique_ptr<Mouse> mouse;
+    std::unique_ptr<StateManager> stateManager;
+
+    std::shared_ptr<GameState> gameState;
 private:
     bool running = true;
     std::unique_ptr<Window> window;
diff --git a/src/engine/core/gui/uiComponent/UiButton.cpp b/src/engine/core/gui/uiComponent/UiButton.cpp
index 2b7b587..f64af0f 100644
--- a/src/engine/core/gui/uiComponent/UiButton.cpp
+++ b/src/engine/core/gui/uiComponent/UiButton.cpp
@@ -38,9 +38,9 @@ void UiButton::onCollectRenderData(UiRenderBundle &uiRenderBundle) {
 
 VisualStyle UiButton::getVisualStyle() const {
     switch (state) {
-        case UiState::PRESSED:
+        case UiElementState::PRESSED:
             return {1.0f, glm::vec3(0.3, 0.6, 1.0), 0.15f};
-        case UiState::HOVERED:
+        case UiElementState::HOVERED:
             return {1.15f, glm::vec3(0.0f), 0.0f};
         default:
             return {};
diff --git a/src/engine/core/gui/uiComponent/UiComponent.cpp b/src/engine/core/gui/uiComponent/UiComponent.cpp
index ddbb732..935257b 100644
--- a/src/engine/core/gui/uiComponent/UiComponent.cpp
+++ b/src/engine/core/gui/uiComponent/UiComponent.cpp
@@ -59,15 +59,15 @@ void UiComponent::onUpdate(float) {
     bool releasedFrame = InputManager::isMouseButtonReleased(GLFW_MOUSE_BUTTON_LEFT);
 
     if (pressedThisFrame) {
-        state = UiState::PRESSED;
+        state = UiElementState::PRESSED;
     } else if (releasedFrame) {
-        if (state == UiState::PRESSED && hoveredNow) {
+        if (state == UiElementState::PRESSED && hoveredNow) {
             onClick();
         }
-        state = hoveredNow ? UiState::HOVERED : UiState::NORMAL;
+        state = hoveredNow ? UiElementState::HOVERED : UiElementState::NORMAL;
     } else {
-        if (state != UiState::PRESSED)
-            state = hoveredNow ? UiState::HOVERED : UiState::NORMAL;
+        if (state != UiElementState::PRESSED)
+            state = hoveredNow ? UiElementState::HOVERED : UiElementState::NORMAL;
     }
 
 }
diff --git a/src/engine/core/gui/uiComponent/UiComponent.h b/src/engine/core/gui/uiComponent/UiComponent.h
index c380754..edf7650 100644
--- a/src/engine/core/gui/uiComponent/UiComponent.h
+++ b/src/engine/core/gui/uiComponent/UiComponent.h
@@ -11,7 +11,7 @@
 #include "UiRenderBundle.h"
 #include "../../../renderer/model/GUITexture.h"
 
-enum class UiState {
+enum class UiElementState {
     NORMAL, HOVERED, PRESSED
 };
 
@@ -38,13 +38,13 @@ public:
         uiPositioner.setLayout(style);
     }
 
-    [[nodiscard]] bool isHovered() const { return state == UiState::HOVERED; }
+    [[nodiscard]] bool isHovered() const { return state == UiElementState::HOVERED; }
     virtual void onClick() {};
 
     UiComponent* getChildAtIndex(size_t t) const;
 protected:
     bool visible = true;
-    UiState state = UiState::NORMAL;
+    UiElementState state = UiElementState::NORMAL;
 
     virtual void onUpdate(float );
     virtual void onCollectRenderData(UiRenderBundle& uiRenderBundle) {}
diff --git a/src/engine/core/inputsOutputs/inputs/Keyboard.cpp b/src/engine/core/inputsOutputs/inputs/Keyboard.cpp
new file mode 100644
index 0000000..5f3ee9f
--- /dev/null
+++ b/src/engine/core/inputsOutputs/inputs/Keyboard.cpp
@@ -0,0 +1,68 @@
+//
+// Created by sebastian on 15.02.26.
+//
+
+#include "Keyboard.h"
+#include "../../Window.h"
+#include "../../Application.h"
+#include <GLFW/glfw3.h>
+
+Keyboard::Keyboard(Window &window) {
+    addKeyListener(window);
+    addTextListener(window);
+}
+
+void Keyboard::update() {
+    keysPressedThisFrame.clear();
+    keysReleasedThisFrame.clear();
+    keysRepeatedThisFrame.clear();
+    charsThisFrame.clear();
+}
+
+bool Keyboard::isKeyDown(int key) {
+    return keysDown.contains(key);
+}
+
+const std::vector<int> & Keyboard::getCharsThisFrame() {
+    return charsThisFrame;
+}
+
+bool Keyboard::keyPressEvent(int key) {
+    return keysPressedThisFrame.contains(key);
+}
+
+bool Keyboard::keyPressEvent(int key, bool checkRepeats) {
+    return keysPressedThisFrame.contains(key) || (checkRepeats && keysRepeatedThisFrame.contains(key));
+}
+
+bool Keyboard::keyReleaseEvent(int key) {
+    return keysReleasedThisFrame.contains(key);
+}
+
+void Keyboard::addTextListener(Window &window) {
+    glfwSetCharCallback(static_cast<GLFWwindow *>(window.GetNativeWindow()), [](GLFWwindow *window, const unsigned int key) {
+        Application::getInstance().keyboard->charsThisFrame.push_back(static_cast<int>(key));
+    });
+}
+
+void Keyboard::addKeyListener(Window &window) {
+    glfwSetKeyCallback(static_cast<GLFWwindow *>(window.GetNativeWindow()), [](GLFWwindow *window, int key, int scancode, int action, int mods) {
+        if (action == GLFW_PRESS) {
+            Application::getInstance().keyboard->reportKeyPress(key);
+        } else if (action == GLFW_RELEASE) {
+            Application::getInstance().keyboard->reportKeyRelease(key);
+        } else if (action == GLFW_REPEAT) {
+            Application::getInstance().keyboard->keysRepeatedThisFrame.insert(key);
+        }
+    });
+}
+
+void Keyboard::reportKeyPress(int key) {
+    keysDown.insert(key);
+    keysPressedThisFrame.insert(key);
+}
+
+void Keyboard::reportKeyRelease(int key) {
+    keysDown.erase(key);
+    keysReleasedThisFrame.insert(key);
+}
diff --git a/src/engine/core/inputsOutputs/inputs/Keyboard.h b/src/engine/core/inputsOutputs/inputs/Keyboard.h
new file mode 100644
index 0000000..e705a27
--- /dev/null
+++ b/src/engine/core/inputsOutputs/inputs/Keyboard.h
@@ -0,0 +1,38 @@
+//
+// Created by sebastian on 15.02.26.
+//
+
+#ifndef DICEWARS_SIEDLER_KEYBOARD_H
+#define DICEWARS_SIEDLER_KEYBOARD_H
+#include <unordered_set>
+#include <vector>
+
+
+class Window;
+
+class Keyboard {
+public:
+    explicit Keyboard(Window& window);
+
+    void update();
+    bool isKeyDown(int key);
+    const std::vector<int>& getCharsThisFrame();
+    bool keyPressEvent(int key);
+    bool keyPressEvent(int key, bool checkRepeats);
+    bool keyReleaseEvent(int key);
+private:
+    std::unordered_set<int> keysPressedThisFrame;
+    std::unordered_set<int> keysRepeatedThisFrame;
+    std::unordered_set<int> keysReleasedThisFrame;
+    std::unordered_set<int> keysDown;
+    std::vector<int> charsThisFrame;
+
+    static void addTextListener(Window& window);
+
+    static void addKeyListener(Window& window);
+    void reportKeyPress(int key);
+    void reportKeyRelease(int key);
+};
+
+
+#endif //DICEWARS_SIEDLER_KEYBOARD_H
\ No newline at end of file
diff --git a/src/engine/core/inputsOutputs/inputs/Mouse.cpp b/src/engine/core/inputsOutputs/inputs/Mouse.cpp
new file mode 100644
index 0000000..c24671c
--- /dev/null
+++ b/src/engine/core/inputsOutputs/inputs/Mouse.cpp
@@ -0,0 +1,107 @@
+//
+// Created by sebastian on 15.02.26.
+//
+
+#include "Mouse.h"
+#include "../../Window.h"
+#include "../../Application.h"
+#include <GLFW/glfw3.h>
+
+Mouse::Mouse(Window &window) {
+    addMoveListener(window);
+    addScrollListener(window);
+    addClickListener(window);
+}
+
+bool Mouse::isButtonDown(MouseButton button) {
+    return buttonsDown.contains(MouseButtonToInt(button));
+}
+
+bool Mouse::isClickEvent(MouseButton button) {
+    return buttonsClickedThisFrame.contains(MouseButtonToInt(button));
+}
+
+bool Mouse::isReleaseEvent(MouseButton button) {
+    return buttonsReleasedThisFrame.contains(MouseButtonToInt(button));
+}
+
+float Mouse::getX() {
+    return x;
+}
+
+float Mouse::getY() {
+    return y;
+}
+
+float Mouse::getDX() {
+    return dx;
+}
+
+float Mouse::getDY() {
+    return dy;
+}
+
+float Mouse::getScroll() {
+    return scroll;
+}
+
+void Mouse::update() {
+    buttonsClickedThisFrame.clear();
+    buttonsReleasedThisFrame.clear();
+    updateDetlas();
+    scroll = 0.0f;
+}
+
+void Mouse::reportButtonClick(int button) {
+    buttonsDown.insert(button);
+    buttonsClickedThisFrame.insert(button);
+}
+
+void Mouse::reportButtonRelease(int button) {
+    buttonsDown.erase(button);
+    buttonsReleasedThisFrame.insert(button);
+}
+
+void Mouse::updateDetlas() {
+    dx = x - lastX;
+    dy = y - lastY;
+    lastX = x;
+    lastY = y;
+}
+
+void Mouse::addMoveListener(Window &window) {
+    glfwSetCursorPosCallback(static_cast<GLFWwindow *>(window.GetNativeWindow()), [](GLFWwindow *window, double xpos, double ypos) {
+        Application::getInstance().mouse->x = static_cast<float>(xpos / Application::getInstance().getWindow().GetWidth() );
+        Application::getInstance().mouse->y = static_cast<float>(ypos / Application::getInstance().getWindow().GetHeight());
+    });
+}
+
+void Mouse::addScrollListener(Window &window) {
+    glfwSetScrollCallback(static_cast<GLFWwindow *>(window.GetNativeWindow()), [](GLFWwindow *window, double xoff, double yoff) {
+        Application::getInstance().mouse->scroll = static_cast<float>(yoff);
+    });
+}
+
+void Mouse::addClickListener(Window &window) {
+    glfwSetMouseButtonCallback(static_cast<GLFWwindow *>(window.GetNativeWindow()), [](GLFWwindow *window, int button, int action, int mods) {
+        if (action == GLFW_PRESS) {
+            Application::getInstance().mouse->reportButtonClick(button);
+        } else if (action == GLFW_RELEASE) {
+            Application::getInstance().mouse->reportButtonRelease(button);
+        }
+    });
+}
+
+int Mouse::MouseButtonToInt(MouseButton button) {
+    int glfwButton = 0;
+    switch (button) {
+        case MouseButton::LEFT: glfwButton = GLFW_MOUSE_BUTTON_LEFT; break;
+        case MouseButton::RIGHT: glfwButton = GLFW_MOUSE_BUTTON_RIGHT; break;
+        case MouseButton::MIDDLE: glfwButton = GLFW_MOUSE_BUTTON_MIDDLE; break;
+    }
+    return glfwButton;
+}
+
+
+
+
diff --git a/src/engine/core/inputsOutputs/inputs/Mouse.h b/src/engine/core/inputsOutputs/inputs/Mouse.h
new file mode 100644
index 0000000..b62bfbc
--- /dev/null
+++ b/src/engine/core/inputsOutputs/inputs/Mouse.h
@@ -0,0 +1,47 @@
+//
+// Created by sebastian on 15.02.26.
+//
+
+#ifndef DICEWARS_SIEDLER_MOUSE_H
+#define DICEWARS_SIEDLER_MOUSE_H
+#include <unordered_set>
+
+#include "MouseButton.h"
+
+class Window;
+
+class Mouse {
+public:
+    explicit Mouse(Window& window);
+    bool isButtonDown(MouseButton button);
+    bool isClickEvent(MouseButton button);
+    bool isReleaseEvent(MouseButton button);
+    float getX();
+    float getY();
+    float getDX();
+    float getDY();
+    float getScroll();
+    void update();
+private:
+    std::unordered_set<int> buttonsDown;
+    std::unordered_set<int> buttonsClickedThisFrame;
+    std::unordered_set<int> buttonsReleasedThisFrame;
+
+    float x, y;
+    float dx, dy;
+    float scroll;
+    float lastX, lastY;
+
+    void reportButtonClick(int button);
+    void reportButtonRelease(int button);
+    void updateDetlas();
+
+    static void addMoveListener(Window& window);
+    static void addScrollListener(Window& window);
+    static void addClickListener(Window& window);
+
+    static int MouseButtonToInt(MouseButton button);
+};
+
+
+#endif //DICEWARS_SIEDLER_MOUSE_H
\ No newline at end of file
diff --git a/src/engine/core/inputsOutputs/inputs/MouseButton.h b/src/engine/core/inputsOutputs/inputs/MouseButton.h
new file mode 100644
index 0000000..668a74c
--- /dev/null
+++ b/src/engine/core/inputsOutputs/inputs/MouseButton.h
@@ -0,0 +1,14 @@
+//
+// Created by sebastian on 15.02.26.
+//
+
+#ifndef DICEWARS_SIEDLER_MOUSEBUTTON_H
+#define DICEWARS_SIEDLER_MOUSEBUTTON_H
+
+
+enum class MouseButton {
+    LEFT,
+    RIGHT,
+    MIDDLE
+};
+#endif //DICEWARS_SIEDLER_MOUSEBUTTON_H
\ No newline at end of file
diff --git a/src/engine/core/inputsOutputs/stateControl/InputUser.cpp b/src/engine/core/inputsOutputs/stateControl/InputUser.cpp
new file mode 100644
index 0000000..c9f8cdf
--- /dev/null
+++ b/src/engine/core/inputsOutputs/stateControl/InputUser.cpp
@@ -0,0 +1,5 @@
+//
+// Created by sebastian on 15.02.26.
+//
+
+#include "InputUser.h"
\ No newline at end of file
diff --git a/src/engine/core/inputsOutputs/stateControl/InputUser.h b/src/engine/core/inputsOutputs/stateControl/InputUser.h
new file mode 100644
index 0000000..8229838
--- /dev/null
+++ b/src/engine/core/inputsOutputs/stateControl/InputUser.h
@@ -0,0 +1,29 @@
+//
+// Created by sebastian on 15.02.26.
+//
+
+#ifndef DICEWARS_SIEDLER_INPUTUSER_H
+#define DICEWARS_SIEDLER_INPUTUSER_H
+#include "../inputs/Keyboard.h"
+
+
+class Mouse;
+
+class InputUser {
+protected:
+    bool mouseEnabled = true;
+    bool keyboardEnabled = true;
+public:
+    virtual ~InputUser() = default;
+
+    void enableKeyboard(bool enable) {keyboardEnabled = enable;}
+    void enableMouse(bool enable) {mouseEnabled = enable;}
+
+    bool isKeyboardEnabled() const {return keyboardEnabled;}
+    bool isMouseEnabled() const {return mouseEnabled;}
+
+    bool isFullyEnabled() const {return keyboardEnabled && mouseEnabled;}
+};
+
+
+#endif //DICEWARS_SIEDLER_INPUTUSER_H
\ No newline at end of file
diff --git a/src/engine/core/inputsOutputs/stateControl/RegisteredUsers.cpp b/src/engine/core/inputsOutputs/stateControl/RegisteredUsers.cpp
new file mode 100644
index 0000000..85aa00a
--- /dev/null
+++ b/src/engine/core/inputsOutputs/stateControl/RegisteredUsers.cpp
@@ -0,0 +1,54 @@
+//
+// Created by sebastian on 15.02.26.
+//
+
+#include "RegisteredUsers.h"
+
+void RegisteredUsers::registerMouseUser(IState *state, InputUser* user) {
+    registerInputUser(state, user, registeredMouseUsers);
+}
+
+void RegisteredUsers::registerKeyboardUser(IState *state, InputUser *user) {
+    registerInputUser(state, user, registeredKeyboardUsers);
+}
+
+void RegisteredUsers::registerUser(IState *state, InputUser *user) {
+    registerInputUser(state, user, registeredKeyboardUsers);
+    registerInputUser(state, user, registeredMouseUsers);
+}
+
+void RegisteredUsers::initState(IState *state) {
+    enableMouseUsers(state, true);
+    enableKeyboardUsers(state, true);
+}
+
+void RegisteredUsers::endState(IState *state) {
+    enableMouseUsers(state, false);
+    enableKeyboardUsers(state, false);
+}
+
+void RegisteredUsers::registerInputUser(IState *state, InputUser* user,
+                                        std::unordered_map<IState *, std::unordered_set<InputUser*>> &registeredUsers) {
+
+    registeredUsers[state].insert(user);
+}
+
+void RegisteredUsers::enableMouseUsers(IState *state, bool enable) {
+    auto it = registeredMouseUsers.find(state);
+    if (it == registeredMouseUsers.end())
+        return;
+
+    for (InputUser *user : it->second) {
+        user->enableMouse(enable);
+    }
+}
+
+void RegisteredUsers::enableKeyboardUsers(IState *state, bool enable) {
+    auto it = registeredKeyboardUsers.find(state);
+    if (it == registeredKeyboardUsers.end())
+        return;
+
+    for (InputUser *user : it->second) {
+        user->enableKeyboard(enable);
+    }
+}
diff --git a/src/engine/core/inputsOutputs/stateControl/RegisteredUsers.h b/src/engine/core/inputsOutputs/stateControl/RegisteredUsers.h
new file mode 100644
index 0000000..73f8261
--- /dev/null
+++ b/src/engine/core/inputsOutputs/stateControl/RegisteredUsers.h
@@ -0,0 +1,32 @@
+//
+// Created by sebastian on 15.02.26.
+//
+
+#ifndef DICEWARS_SIEDLER_REGISTEREDUSERS_H
+#define DICEWARS_SIEDLER_REGISTEREDUSERS_H
+#include <unordered_map>
+#include <unordered_set>
+
+#include "InputUser.h"
+#include "states/IState.h"
+
+
+class RegisteredUsers {
+public:
+    void registerMouseUser(IState* state, InputUser* user);
+    void registerKeyboardUser(IState* state, InputUser* user);
+    void registerUser(IState* state, InputUser* user);
+    void initState(IState* state);
+    void endState(IState* state);
+private:
+    std::unordered_map<IState*, std::unordered_set<InputUser*>> registeredMouseUsers;
+    std::unordered_map<IState*, std::unordered_set<InputUser*>> registeredKeyboardUsers;
+
+    static void registerInputUser(IState* state, InputUser* user, std::unordered_map<IState*, std::unordered_set<InputUser*>>& registeredUsers);
+
+    void enableMouseUsers(IState* state, bool enable);
+    void enableKeyboardUsers(IState* state, bool enable);
+};
+
+
+#endif //DICEWARS_SIEDLER_REGISTEREDUSERS_H
\ No newline at end of file
diff --git a/src/engine/core/inputsOutputs/stateControl/StateManager.cpp b/src/engine/core/inputsOutputs/stateControl/StateManager.cpp
new file mode 100644
index 0000000..400c5c8
--- /dev/null
+++ b/src/engine/core/inputsOutputs/stateControl/StateManager.cpp
@@ -0,0 +1,76 @@
+//
+// Created by sebastian on 15.02.26.
+//
+
+#include "StateManager.h"
+
+#include <algorithm>
+#include <utility>
+
+void StateManager::suggestState(std::shared_ptr<IState> state, bool waitForEndRequest) {
+    QueuedState queuedState(state, waitForEndRequest);
+    sortStateIntoQueue(queuedState);
+}
+
+void StateManager::endState(std::shared_ptr<IState> state) {
+    queuedStates.erase(std::remove_if(queuedStates.begin(), queuedStates.end(), [&](const QueuedState &queuedState) {
+        return queuedState.state == state;
+    }), queuedStates.end());
+}
+
+void StateManager::updateState() {
+    auto nextState = getNextState();
+    cleanQueue();
+    if (currentState == nextState) {
+        return;
+    }
+    switchState(nextState);
+}
+
+void StateManager::registerUser(InputUser *user, std::initializer_list<std::shared_ptr<IState>> states) {
+    for (auto& state : states) {
+        registeredUsers.registerUser(state.get(), user);
+    }
+}
+
+void StateManager::registerKeyboardUser(InputUser *user, std::initializer_list<std::shared_ptr<IState>> states) {
+    for (auto& state : states) {
+        registeredUsers.registerKeyboardUser(state.get(), user);
+    }
+}
+
+void StateManager::registerMouseUser(InputUser *user, std::initializer_list<std::shared_ptr<IState>> states) {
+    for (auto& state : states) {
+        registeredUsers.registerMouseUser(state.get(), user);
+    }
+}
+
+void StateManager::sortStateIntoQueue(const QueuedState &queued_state) {
+    auto it = std::ranges::find_if(queuedStates,
+    [&](const QueuedState &s) {
+               return s.state->getPriority() > queued_state.state->getPriority();
+         });
+
+    queuedStates.insert(it, queued_state);
+}
+
+std::shared_ptr<IState> StateManager::getNextState() {
+    if (queuedStates.empty()) {
+        return defaultState;
+    }
+    return queuedStates.front().state;
+}
+
+void StateManager::cleanQueue() {
+    queuedStates.erase(
+            std::remove_if(queuedStates.begin(), queuedStates.end(),
+                [](const QueuedState& s) { return !s.waitForEndRequest; }),
+            queuedStates.end()
+        );
+}
+
+void StateManager::switchState(std::shared_ptr<IState> newState) {
+    registeredUsers.endState(currentState.get());
+    currentState = std::move(newState);
+    registeredUsers.initState(currentState.get());
+}
diff --git a/src/engine/core/inputsOutputs/stateControl/StateManager.h b/src/engine/core/inputsOutputs/stateControl/StateManager.h
new file mode 100644
index 0000000..b66cff2
--- /dev/null
+++ b/src/engine/core/inputsOutputs/stateControl/StateManager.h
@@ -0,0 +1,47 @@
+//
+// Created by sebastian on 15.02.26.
+//
+
+#ifndef DICEWARS_SIEDLER_STATEMANAGER_H
+#define DICEWARS_SIEDLER_STATEMANAGER_H
+#include <memory>
+#include <utility>
+
+#include "states/IState.h"
+#include "RegisteredUsers.h"
+
+
+class StateManager {
+public:
+    StateManager(std::shared_ptr<IState> defaultState, std::shared_ptr<IState> initialState) : defaultState(defaultState), currentState(initialState) {
+        suggestState(initialState, true);
+    };
+
+    void suggestState(std::shared_ptr<IState> state, bool waitForEndRequest);
+    void endState(std::shared_ptr<IState> state);
+    std::shared_ptr<IState> getCurrentState() const {return currentState;}
+    void updateState();
+
+    void registerUser(InputUser* user, std::initializer_list<std::shared_ptr<IState>> states);
+    void registerKeyboardUser(InputUser* user, std::initializer_list<std::shared_ptr<IState>> states);
+    void registerMouseUser(InputUser* user, std::initializer_list<std::shared_ptr<IState>> states);
+private:
+    struct QueuedState {
+        std::shared_ptr<IState> state;
+        bool waitForEndRequest;
+    };
+
+    std::shared_ptr<IState> defaultState;
+    std::shared_ptr<IState> currentState;
+
+    RegisteredUsers registeredUsers;
+    std::vector<QueuedState> queuedStates;
+
+    void sortStateIntoQueue(const QueuedState& queued_state);
+    std::shared_ptr<IState> getNextState();
+    void cleanQueue();
+    void switchState(std::shared_ptr<IState> newState);
+};
+
+
+#endif //DICEWARS_SIEDLER_STATEMANAGER_H
\ No newline at end of file
diff --git a/src/engine/core/inputsOutputs/stateControl/StateRegistry.cpp b/src/engine/core/inputsOutputs/stateControl/StateRegistry.cpp
new file mode 100644
index 0000000..193c6ab
--- /dev/null
+++ b/src/engine/core/inputsOutputs/stateControl/StateRegistry.cpp
@@ -0,0 +1,5 @@
+//
+// Created by sebastian on 15.02.26.
+//
+
+#include "StateRegistry.h"
\ No newline at end of file
diff --git a/src/engine/core/inputsOutputs/stateControl/StateRegistry.h b/src/engine/core/inputsOutputs/stateControl/StateRegistry.h
new file mode 100644
index 0000000..69efc72
--- /dev/null
+++ b/src/engine/core/inputsOutputs/stateControl/StateRegistry.h
@@ -0,0 +1,37 @@
+//
+// Created by sebastian on 15.02.26.
+//
+
+#ifndef DICEWARS_SIEDLER_STATEREGISTRY_H
+#define DICEWARS_SIEDLER_STATEREGISTRY_H
+#include <memory>
+
+#include "states/EmptyState.h"
+#include "states/State.h"
+
+
+class StateRegistry {
+public:
+    static StateRegistry& get() {
+        static StateRegistry instance;
+        return instance;
+    }
+
+    std::shared_ptr<GameState> game;
+    std::shared_ptr<EmptyState> empty;
+    std::shared_ptr<UiState> uiState;
+
+private:
+    StateRegistry() {
+        game = std::make_shared<GameState>();
+        empty = std::make_shared<EmptyState>();
+        uiState = std::make_shared<UiState>();
+    }
+
+    // Keine Kopien erlaubt
+StateRegistry(const StateRegistry&) = delete;
+    StateRegistry& operator=(const StateRegistry&) = delete;
+};
+
+
+#endif //DICEWARS_SIEDLER_STATEREGISTRY_H
\ No newline at end of file
diff --git a/src/engine/core/inputsOutputs/stateControl/inputUser/GameInputUser.cpp b/src/engine/core/inputsOutputs/stateControl/inputUser/GameInputUser.cpp
new file mode 100644
index 0000000..1d41d71
--- /dev/null
+++ b/src/engine/core/inputsOutputs/stateControl/inputUser/GameInputUser.cpp
@@ -0,0 +1,5 @@
+//
+// Created by sebastian on 15.02.26.
+//
+
+#include "GameInputUser.h"
\ No newline at end of file
diff --git a/src/engine/core/inputsOutputs/stateControl/inputUser/GameInputUser.h b/src/engine/core/inputsOutputs/stateControl/inputUser/GameInputUser.h
new file mode 100644
index 0000000..669aa69
--- /dev/null
+++ b/src/engine/core/inputsOutputs/stateControl/inputUser/GameInputUser.h
@@ -0,0 +1,41 @@
+//
+// Created by sebastian on 15.02.26.
+//
+
+#ifndef DICEWARS_SIEDLER_GAMEINPUTUSER_H
+#define DICEWARS_SIEDLER_GAMEINPUTUSER_H
+#include "../InputUser.h"
+#include "../../../Application.h"
+#include "../../../../../game/hexWorld/ecs/systems/TileHighlightSystem.h"
+
+
+class GameInputUser : public InputUser {
+public:
+    GameInputUser(TileHighlightSystem& highlightSystem,
+                 EntityManager& em,
+                 MousePicker& picker,
+                 Camera& camera,
+                 GameMode& gameMode)
+       : highlightSystem(highlightSystem),
+         em(em),
+         picker(picker),
+         camera(camera),
+         gameMode(gameMode) {}
+
+    void update() {
+        if (!isMouseEnabled()) {
+            return;
+        }
+
+        highlightSystem.update(em, picker, camera, gameMode);
+    }
+private:
+    TileHighlightSystem& highlightSystem;
+    EntityManager& em;
+    MousePicker& picker;
+    Camera& camera;
+    GameMode& gameMode;
+};
+
+
+#endif //DICEWARS_SIEDLER_GAMEINPUTUSER_H
\ No newline at end of file
diff --git a/src/engine/core/inputsOutputs/stateControl/states/EmptyState.cpp b/src/engine/core/inputsOutputs/stateControl/states/EmptyState.cpp
new file mode 100644
index 0000000..09da6ef
--- /dev/null
+++ b/src/engine/core/inputsOutputs/stateControl/states/EmptyState.cpp
@@ -0,0 +1,5 @@
+//
+// Created by sebastian on 15.02.26.
+//
+
+#include "EmptyState.h"
\ No newline at end of file
diff --git a/src/engine/core/inputsOutputs/stateControl/states/EmptyState.h b/src/engine/core/inputsOutputs/stateControl/states/EmptyState.h
new file mode 100644
index 0000000..0e96d8b
--- /dev/null
+++ b/src/engine/core/inputsOutputs/stateControl/states/EmptyState.h
@@ -0,0 +1,17 @@
+//
+// Created by sebastian on 15.02.26.
+//
+
+#ifndef DICEWARS_SIEDLER_EMPTYSTATE_H
+#define DICEWARS_SIEDLER_EMPTYSTATE_H
+#include <limits>
+
+#include "IState.h"
+
+
+class EmptyState : public IState{
+    int getPriority() override { return std::numeric_limits<int>::max(); }
+};
+
+
+#endif //DICEWARS_SIEDLER_EMPTYSTATE_H
\ No newline at end of file
diff --git a/src/engine/core/inputsOutputs/stateControl/states/IState.cpp b/src/engine/core/inputsOutputs/stateControl/states/IState.cpp
new file mode 100644
index 0000000..ed8cc71
--- /dev/null
+++ b/src/engine/core/inputsOutputs/stateControl/states/IState.cpp
@@ -0,0 +1,5 @@
+//
+// Created by sebastian on 15.02.26.
+//
+
+#include "IState.h"
diff --git a/src/engine/core/inputsOutputs/stateControl/states/IState.h b/src/engine/core/inputsOutputs/stateControl/states/IState.h
new file mode 100644
index 0000000..2106981
--- /dev/null
+++ b/src/engine/core/inputsOutputs/stateControl/states/IState.h
@@ -0,0 +1,17 @@
+//
+// Created by sebastian on 15.02.26.
+//
+
+#ifndef DICEWARS_SIEDLER_ISTATE_H
+#define DICEWARS_SIEDLER_ISTATE_H
+
+
+class IState {
+public:
+    virtual ~IState() = default;
+
+    virtual int getPriority() = 0;
+};
+
+
+#endif //DICEWARS_SIEDLER_ISTATE_H
\ No newline at end of file
diff --git a/src/engine/core/inputsOutputs/stateControl/states/State.cpp b/src/engine/core/inputsOutputs/stateControl/states/State.cpp
new file mode 100644
index 0000000..977915c
--- /dev/null
+++ b/src/engine/core/inputsOutputs/stateControl/states/State.cpp
@@ -0,0 +1,5 @@
+//
+// Created by sebastian on 15.02.26.
+//
+
+#include "State.h"
\ No newline at end of file
diff --git a/src/engine/core/inputsOutputs/stateControl/states/State.h b/src/engine/core/inputsOutputs/stateControl/states/State.h
new file mode 100644
index 0000000..9ab044e
--- /dev/null
+++ b/src/engine/core/inputsOutputs/stateControl/states/State.h
@@ -0,0 +1,26 @@
+//
+// Created by sebastian on 15.02.26.
+//
+
+#ifndef DICEWARS_SIEDLER_STATE_H
+#define DICEWARS_SIEDLER_STATE_H
+#include "IState.h"
+
+
+class GameState : public IState {
+public:
+    int getPriority() override { return 10; }
+};
+
+class UiState : public IState {
+public:
+    int getPriority() override { return 5; }
+};
+
+class ModalState : public IState {
+public:
+    int getPriority() override { return 0; } // höchste Priorität
+};
+
+
+#endif //DICEWARS_SIEDLER_STATE_H
\ No newline at end of file
diff --git a/src/game/GameLayer.cpp b/src/game/GameLayer.cpp
index 7801a1e..542715a 100644
--- a/src/game/GameLayer.cpp
+++ b/src/game/GameLayer.cpp
@@ -9,6 +9,7 @@
 #include "../engine/core/animations/AnimationSystem.h"
 #include "../engine/core/ECS/ModelStateComponent.h"
 #include "../engine/core/ECS/WorldSpriteComponent.h"
+#include "../engine/core/inputsOutputs/stateControl/StateRegistry.h"
 #include "../engine/platform/glfw/InputManager.h"
 #include "../engine/renderer/Renderer.h"
 #include "../engine/renderer/loader/OBJLoader.h"
@@ -66,6 +67,9 @@ void GameLayer::onAttach()
     events.subscribe<TurnChangedEvent>([this](const TurnChangedEvent& event) {
          ProducingSystem::onTurnEnded(*entityManager);
     });
+
+    gameInputUser = std::make_unique<GameInputUser>(*tileHighlightSystem, *entityManager, *mousePicker, *camera, *gameMode);
+    Application::getInstance().stateManager->registerMouseUser(gameInputUser.get(), {StateRegistry::get().game});
 }
 
 void GameLayer::onDetach()
@@ -100,7 +104,11 @@ void GameLayer::onUpdate()
 
     AnimationSystem::update(*entityManager, EngineTime::totalTime);
     camera->move(moveDir, 0.5f);
-    tileHighlightSystem->update(*entityManager, *mousePicker, *camera, *gameMode);
+    if (gameInputUser->isMouseEnabled()) {
+        tileHighlightSystem->update(*entityManager, *mousePicker, *camera, *gameMode);
+    } else {
+        tileHighlightSystem->reset(*entityManager);
+    }
     buildingPlacementSystem->update(*entityManager, *gameMode, 0, *turnState);
     CollectResourceSystem::update(*entityManager, *gameMode);
     RenderSystem::render(*entityManager, *renderer);
diff --git a/src/game/GameLayer.h b/src/game/GameLayer.h
index 4a25ace..54e0987 100644
--- a/src/game/GameLayer.h
+++ b/src/game/GameLayer.h
@@ -5,6 +5,7 @@
 #ifndef DICEWARS_SIEDLER_GAMELAYER_H
 #define DICEWARS_SIEDLER_GAMELAYER_H
 #include "../engine/core/ECS/RenderSystem.h"
+#include "../engine/core/inputsOutputs/stateControl/inputUser/GameInputUser.h"
 #include "../engine/layer/Layer.h"
 #include "../engine/platform/glfw/MousePicker.h"
 #include "../engine/renderer/Renderer.h"
@@ -48,6 +49,8 @@ private:
     std::unique_ptr<TurnSystem> turnSystem = std::make_unique<TurnSystem>();
     std::unique_ptr<TurnState> turnState = std::make_unique<TurnState>();
 
+    std::unique_ptr<GameInputUser> gameInputUser;
+
     EntityID testEntity;
 };
 
diff --git a/src/game/UILayer.cpp b/src/game/UILayer.cpp
index efff703..7cf2406 100644
--- a/src/game/UILayer.cpp
+++ b/src/game/UILayer.cpp
@@ -12,6 +12,7 @@
 #include "../engine/core/gui/uiComponent/UiButton.h"
 #include "../engine/core/gui/uiComponent/UiImage.h"
 #include "../engine/core/gui/uiComponent/UiText.h"
+#include "../engine/core/inputsOutputs/stateControl/StateRegistry.h"
 #include "../engine/renderer/loader/AssetManager.h"
 #include "../engine/renderer/loader/Loader.h"
 #include "../engine/renderer/model/GUITexture.h"
@@ -139,6 +140,11 @@ void UILayer::onUpdate() {
     auto renderTexts = renderBundle.getGUITexts();
     textRenderer->renderGuiTexts(renderTexts);
 
+    if (rootContainer->isMouseOver(Application::getInstance().mouse->getX(), Application::getInstance().mouse->getY())) {
+        Application::getInstance().stateManager->suggestState(StateRegistry::get().uiState, false);
+    } else {
+        Application::getInstance().stateManager->suggestState(StateRegistry::get().game, false);
+    }
 }
 
 void UILayer::onDetach() {
diff --git a/src/game/hexWorld/ecs/systems/TileHighlightSystem.cpp b/src/game/hexWorld/ecs/systems/TileHighlightSystem.cpp
index 258fd71..66f499c 100644
--- a/src/game/hexWorld/ecs/systems/TileHighlightSystem.cpp
+++ b/src/game/hexWorld/ecs/systems/TileHighlightSystem.cpp
@@ -42,6 +42,15 @@ void TileHighlightSystem::update(EntityManager &entityManager, const MousePicker
     }
 }
 
+void TileHighlightSystem::reset(EntityManager &entityManager) {
+    for (EntityID entityID : entityManager.getAllEntities()) {
+        auto tileRenderComponent = entityManager.getComponent<TileRenderComponent>(entityID);
+        if (tileRenderComponent) {
+            tileRenderComponent->isHighlighted = false;
+        }
+    }
+}
+
 bool TileHighlightSystem::intersectTile(const glm::vec3 &rayOrigin, const glm::vec3 &rayDirection, glm::vec3 worldPos, float hexRadius, glm::vec3& intersectionPoint) {
     float t = -rayOrigin.y / rayDirection.y;
     if (t < 0) return false;
diff --git a/src/game/hexWorld/ecs/systems/TileHighlightSystem.h b/src/game/hexWorld/ecs/systems/TileHighlightSystem.h
index 0f8e089..95f5271 100644
--- a/src/game/hexWorld/ecs/systems/TileHighlightSystem.h
+++ b/src/game/hexWorld/ecs/systems/TileHighlightSystem.h
@@ -13,6 +13,7 @@ class Camera;
 class TileHighlightSystem {
 public:
     void update(EntityManager &entityManager, const MousePicker &picker, const Camera &camera, GameMode& gameMode);
+    void reset(EntityManager& entityManager);
 private:
     bool intersectTile(const glm::vec3 & rayOrigin, const glm::vec3 & rayDirection, glm::vec3 worldPos, float hexRadius, glm::vec3 &interectionPoint);
 };