diff --git a/assets/shaders/guiFragmentShader.glsl b/assets/shaders/guiFragmentShader.glsl
index 25944ca..cb1d305 100644
--- a/assets/shaders/guiFragmentShader.glsl
+++ b/assets/shaders/guiFragmentShader.glsl
@@ -14,6 +14,7 @@ uniform float tintStrength;    // 0.0 = aus
 uniform bool hasForeground;
 uniform bool hasBackground;
 
+uniform float dimFactor;
 
 void main(void) {
     vec4 fg = hasForeground ? texture(guiTexture, textureCoords) : vec4(0.0);
@@ -28,4 +29,5 @@ void main(void) {
     textureColor.rgb = mix(textureColor.rgb, tintColor, tintStrength);
 
     color = textureColor;
+    color *= dimFactor;
 }
\ No newline at end of file
diff --git a/src/engine/core/scenes/SplashScreenLayer.cpp b/src/engine/core/scenes/SplashScreenLayer.cpp
index fc845ac..7c44acb 100644
--- a/src/engine/core/scenes/SplashScreenLayer.cpp
+++ b/src/engine/core/scenes/SplashScreenLayer.cpp
@@ -7,6 +7,7 @@
 #include "SceneManager.h"
 #include "../../renderer/loader/AssetManager.h"
 #include "../../renderer/GUIRenderer.h"
+#include "../../renderer/RenderContext.h"
 #include "../gui/uiComponent/UiImage.h"
 #include "../gui/uiComponent/UiProgressbar.h"
 #include "../gui/uiMain/UiContainer.h"
@@ -23,7 +24,8 @@ void SplashScreenLayer::onRender() {
     }
 
     auto guis = renderBundle.getGUITextures();
-    guiRenderer->render(guis);
+    RenderContext ctx = RenderContext::Default();
+    guiRenderer->render(guis, ctx);
 }
 
 void SplashScreenLayer::onUpdate() {
diff --git a/src/engine/renderer/GUIRenderer.cpp b/src/engine/renderer/GUIRenderer.cpp
index 872ecc7..5643afa 100644
--- a/src/engine/renderer/GUIRenderer.cpp
+++ b/src/engine/renderer/GUIRenderer.cpp
@@ -7,6 +7,7 @@
 #include <iostream>
 #include <vector>
 
+#include "RenderContext.h"
 #include "components/UiRenderBundle.h"
 #include "../toolbox/MathUtils.h"
 #include "loader/Loader.h"
@@ -17,8 +18,9 @@ GUIRenderer::GUIRenderer(Loader &loader) {
     rawModel = std::make_unique<RawModel>(model);
 }
 
-void GUIRenderer::render(std::vector<std::shared_ptr<GUITexture>>& gui_textures) {
+void GUIRenderer::render(std::vector<std::shared_ptr<GUITexture>>& gui_textures, RenderContext& ctx) {
     guiShader.start();
+    guiShader.loadDimFactor(ctx.dimFactor);
     glEnable(GL_BLEND);
     glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
     glDisable(GL_DEPTH_TEST);
diff --git a/src/engine/renderer/GUIRenderer.h b/src/engine/renderer/GUIRenderer.h
index d03ac4f..5fcaf66 100644
--- a/src/engine/renderer/GUIRenderer.h
+++ b/src/engine/renderer/GUIRenderer.h
@@ -13,7 +13,7 @@
 #include "shaders/GUIShader.h"
 
 
-
+struct RenderContext;
 class Loader;
 
 class GUIRenderer {
@@ -22,7 +22,7 @@ private:
 public:
     GUIShader guiShader;
     explicit GUIRenderer(Loader& loader);
-    void render(std::vector<std::shared_ptr<GUITexture>> &gui_textures);
+    void render(std::vector<std::shared_ptr<GUITexture>> &gui_textures, RenderContext& ctx);
 
     void cleanUp();
 };
diff --git a/src/engine/renderer/shaders/GUIShader.cpp b/src/engine/renderer/shaders/GUIShader.cpp
index 17c7425..1c46fc9 100644
--- a/src/engine/renderer/shaders/GUIShader.cpp
+++ b/src/engine/renderer/shaders/GUIShader.cpp
@@ -24,6 +24,10 @@ void GUIShader::loadBackgroundTexture(int textureBankIndex, bool useTexture) {
     ShaderProgram::loadInt(getUniformLocation("backgroundTexture"), textureBankIndex);
 }
 
+void GUIShader::loadDimFactor(float dim_factor) {
+    ShaderProgram::loadFloat(getUniformLocation("dimFactor"), dim_factor);
+}
+
 void GUIShader::bindAttributes() const {
     ShaderProgram::bindAttribute(0, "position");
 }
diff --git a/src/engine/renderer/shaders/GUIShader.h b/src/engine/renderer/shaders/GUIShader.h
index bd0d510..ee89164 100644
--- a/src/engine/renderer/shaders/GUIShader.h
+++ b/src/engine/renderer/shaders/GUIShader.h
@@ -18,6 +18,8 @@ public:
     void loadForegroundTexture(int textureBankIndex, bool useTexture);
     void loadBackgroundTexture(int textureBankIndex, bool useTexture);
 
+    void loadDimFactor(float dim_factor);
+
 private:
     inline static const std::string VERTEX_FILE = "assets/shaders/guiVertexShader.glsl";
     inline static const std::string FRAGMENT_FILE = "assets/shaders/guiFragmentShader.glsl";
diff --git a/src/game/UILayer.cpp b/src/game/UILayer.cpp
index e5ae9f6..d58cbad 100644
--- a/src/game/UILayer.cpp
+++ b/src/game/UILayer.cpp
@@ -156,11 +156,11 @@ void UILayer::onRender() {
     if (rootContainer) {
         rootContainer->collectRenderData(renderBundle);
     }
-
+    RenderContext ctx = RenderContext::Default();
     auto guis = renderBundle.getGUITextures();
-    guiRenderer->render(guis);
+    guiRenderer->render(guis, ctx);
 
     auto renderTexts = renderBundle.getGUITexts();
-    RenderContext ctx = RenderContext::Default();
+
     textRenderer->renderGuiTexts(renderTexts, Application::getInstance().getWindow().GetWidth(), Application::getInstance().getWindow().GetHeight(), ctx);
 }
diff --git a/src/game/scenes/main/MainUiLayer.cpp b/src/game/scenes/main/MainUiLayer.cpp
index f66c4a6..d758d93 100644
--- a/src/game/scenes/main/MainUiLayer.cpp
+++ b/src/game/scenes/main/MainUiLayer.cpp
@@ -30,8 +30,15 @@ void MainUiLayer::onAttach() {
     btnStyle2.width = SizeValue(350, SizeUnit::Pixels);
     btnStyle2.height = SizeValue(90, SizeUnit::Pixels);
 
-    rootContainer->addChild<UiButton>(std::make_unique<UiButton>(AssetManager::getTexture("btn_background")->getTextureID(), "New Game",
+    auto newGameBtn = rootContainer->addChild<UiButton>(std::make_unique<UiButton>(AssetManager::getTexture("btn_background")->getTextureID(), "New Game",
         *AssetManager::getUiTheme("default")->large, btnStyle2));
+    newGameBtn->addMouseListener([this](const MouseEventData& eventData) {
+        if (eventData.isCompleteClick(MouseButton::LEFT)) {
+            auto newGameContainer = std::make_unique<UiContainer>();
+
+            uiStack->push(std::move(newGameContainer));
+        }
+    });
 
     LayoutStyle btnStyle3;
     btnStyle3.margin.top = SizeValue(15, SizeUnit::Pixels);
@@ -68,7 +75,7 @@ void MainUiLayer::onRender() {
     if (uiStack) {
         for (const auto& panel : uiStack->getPanels()) {
             RenderContext ctx;
-            if (!uiStack->isTop(panel.get())) {
+            if (uiStack->isTop(panel.get())) {
                 ctx = RenderContext::Default();
             } else {
                 ctx = RenderContext::Dimmed(uiConfig.backgroundDim);
@@ -78,7 +85,7 @@ void MainUiLayer::onRender() {
             panel->collectRenderData(renderBundle);
 
             auto guis = renderBundle.getGUITextures();
-            guiRenderer->render(guis);
+            guiRenderer->render(guis, ctx);
 
             const auto renderTexts = renderBundle.getGUITexts();
             textRenderer->renderGuiTexts(renderTexts, static_cast<float>(Application::getInstance().getWindow().GetWidth()),
diff --git a/src/game/scenes/main/MainUiLayer.h b/src/game/scenes/main/MainUiLayer.h
index 50b1c18..9dc9ca5 100644
--- a/src/game/scenes/main/MainUiLayer.h
+++ b/src/game/scenes/main/MainUiLayer.h
@@ -7,7 +7,6 @@
 #include "../../../engine/layer/Layer.h"
 #include "../../../engine/renderer/GUIRenderer.h"
 #include "../../../engine/renderer/loader/Loader.h"
-#include "../../../engine/core/gui/uiMain/UiContainer.h"
 #include "../../../engine/core/gui/uiMain/UiStack.h"
 #include "../../../engine/renderer/TextRenderer.h"