diff --git a/src/entities/Camera.h b/src/entities/Camera.h
index 6f6fe0a..a47af65 100644
--- a/src/entities/Camera.h
+++ b/src/entities/Camera.h
@@ -1,5 +1,5 @@
 #pragma once
-
+#include <GL/glew.h>
 #include <GLFW/glfw3.h>
 #include <glm/gtc/matrix_transform.hpp>
 
diff --git a/src/gui/gui_interactable.cpp b/src/gui/gui_interactable.cpp
index d96250c..4681554 100644
--- a/src/gui/gui_interactable.cpp
+++ b/src/gui/gui_interactable.cpp
@@ -1,3 +1,4 @@
+#include <GL/glew.h>
 #include <GLFW/glfw3.h>
 #include "gui_interactable.h"
 
diff --git a/src/main.cpp b/src/main.cpp
index 86ccdc0..a2b49ce 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -3,6 +3,7 @@
 #include <glm/gtc/matrix_transform.hpp>
 #define STB_IMAGE_IMPLEMENTATION
 #include <iostream>
+#include <map>
 
 #include "stb_image.h"
 #include <ostream>
@@ -16,9 +17,9 @@
 #include "renderEngine/renderer.h"
 #include "shaders/entity_shader.h"
 #include "toolbox/toolbox.h"
-#include "entities/collision_entity.h"
-#include "entities/player.h"
-#include "collision/collision_handler.h"
+#include "scenes/scene.h"
+#include "scenes/in_Game_Scene.h"
+#include "scenes/startup_Scene.h"
 
 #pragma comment(lib, "glfw3.lib")
 #pragma comment(lib, "glew32s.lib")
@@ -27,7 +28,7 @@
 static double UpdateDelta();
 
 static GLFWwindow* window;
-
+scene::Scene* current_scene;
 
 int main(void)
 {
@@ -45,96 +46,51 @@ int main(void)
     glGetError();
 	#pragma endregion
 
-    glfwSetKeyCallback(window, [](GLFWwindow* window, int key, int scancode, int action, int mods)
-    {
-	    if (key == GLFW_KEY_ESCAPE)
-	        glfwSetWindowShouldClose(window, true);
-    });
-	
-	
-    models::RawModel raw_model = render_engine::LoadObjModel("res/House.obj");
-    models::ModelTexture texture = { render_engine::loader::LoadTexture("res/Texture.png") };
-    texture.shine_damper = 10;
-    texture.reflectivity = 0;
-    models::TexturedModel model = { raw_model, texture };
-
     
-    // load and add some models (in this case some level sections) to the entities list. 
-    std::vector<entities::Entity*> entities;
-    std::vector<entities::CollisionEntity*> collision_entities;
-	
-    // int z = 0;
-    // for (int i = 0; i < 5; ++i)
-    // {
-    //     entities.push_back(entities::Entity(model, glm::vec3(0, -50, -50 - z), glm::vec3(0, 90, 0), 20));
-    //     z += (raw_model.model_size.x * 20);
-    // }
-
-    std::vector<entities::Light> lights;
-    lights.push_back(entities::Light(glm::vec3(0, 1000, -7000), glm::vec3(5, 5, 5)));
-    lights.push_back(entities::Light(glm::vec3(0, 0, -30), glm::vec3(2, 0, 2), glm::vec3(0.0001f, 0.0001f, 0.0001f)));
-    lights.push_back(entities::Light(glm::vec3(0, 0, -200), glm::vec3(0, 2, 0), glm::vec3(0.0001f, 0.0001f, 0.0001f)));
-
-
-    // Collision testing
-    entities::Player player(model, glm::vec3(0, 0, 0), glm::vec3(0, 0, 0), 1, { {0, 0, 0}, raw_model.model_size });
-    entities.push_back(&player);
-    collision_entities.push_back(&player);
-	
-    entities::Player2 player2(model, glm::vec3(50, 0, 0), glm::vec3(0, 0, 0), 1, { {50, 0, 0}, raw_model.model_size });
-    entities.push_back(&player2);
-    collision_entities.push_back(&player2);
-	
-	
-	shaders::EntityShader shader;
-    shader.Init();
-    render_engine::renderer::Init(shader);
-
-    entities::Camera camera(glm::vec3(40, 10, 80), glm::vec3(0, 0, 0));
+    current_scene = new scene::Startup_Scene();
 
 
 	
-	
+
+    glfwSetKeyCallback(window, [](GLFWwindow* window, int key, int scancode, int action, int mods)
+        {
+            current_scene->onKey(window, key, scancode, action, mods);
+            if (key == GLFW_KEY_ESCAPE)
+                glfwSetWindowShouldClose(window, true);
+        });
+
+    bool window_open = true;
 	// Main game loop
-	while (!glfwWindowShouldClose(window))
+	while (!glfwWindowShouldClose(window) && window_open)
 	{
-        // Update
+        //Update
         const double delta = UpdateDelta();
-        camera.Move(window);
 
+        scene::Scenes return_value = current_scene->start(window);
+        delete current_scene;
 
-        player.Update();
-        player2.Update();
+        switch (return_value) {
+            case scene::Scenes::STOP:
+                window_open = false;
+                break;
 
-        collision::CheckCollisions(collision_entities);
-		
+            case scene::Scenes::STARTUP:
+                current_scene = new scene::Startup_Scene();
+                break;
 
-		// Render
-        render_engine::renderer::Prepare();
-		
-		// Start rendering the entities
-        shader.Start();
-        shader.LoadSkyColor(render_engine::renderer::SKY_COLOR);
-        shader.LoadLights(lights);
-        shader.LoadViewMatrix(camera);
-		
-        // Renders each entity in the entities list
-		for (entities::Entity* entity : entities)
-		{
-            render_engine::renderer::Render(*entity, shader);
-		}
+            case scene::Scenes::INGAME:
+                current_scene = new scene::In_Game_Scene();
+                break;
 
-		// Stop rendering the entities
-        shader.Stop();
-
-        // Finish up
-		glfwSwapBuffers(window);
-		glfwPollEvents();
+            default:
+                std::cout << "Wrong return value!!! ->" << std::endl;
+                break;
+        }
 	}
 
-	// Clean up
-    shader.CleanUp();
-    render_engine::loader::CleanUp();
+	// Clean up -> preventing memory leaks!!!
+    std::cout << "ending..." << std::endl;
+    delete current_scene;
 	glfwTerminate();
     return 0;
 }
@@ -146,4 +102,4 @@ static double UpdateDelta()
     double delt_time = current_time - last_frame_time;
     last_frame_time = current_time;
     return delt_time;
-}
\ No newline at end of file
+}
diff --git a/src/scenes/in_Game_Scene.cpp b/src/scenes/in_Game_Scene.cpp
new file mode 100644
index 0000000..0e7c268
--- /dev/null
+++ b/src/scenes/in_Game_Scene.cpp
@@ -0,0 +1,118 @@
+#include <iostream>
+#include <GL/glew.h>
+#include <GLFW/glfw3.h>
+#include "in_Game_Scene.h"
+#include "startup_Scene.h"
+#include "../gui/gui_interactable.h"
+#include "../models/model.h"
+#include "../renderEngine/loader.h"
+#include "../renderEngine/obj_loader.h"
+#include "../renderEngine/renderer.h"
+#include "../shaders/entity_shader.h"
+#include "../toolbox/toolbox.h"
+
+
+namespace scene
+{
+	std::vector<entities::Entity> entities;
+	std::vector<entities::Light> lights;
+	models::RawModel raw_model;
+	models::ModelTexture texture;
+	shaders::EntityShader *shader;
+	shaders::GuiShader *gui_shader;
+	entities::Camera camera(glm::vec3(0, 0, 0), glm::vec3(0, 0, 0));
+	std::vector<gui::GuiTexture*> guis;
+
+	
+	In_Game_Scene::In_Game_Scene()
+	{
+		shader = new shaders::EntityShader;
+		shader->Init();	
+		render_engine::renderer::Init(*shader);
+
+		gui_shader = new shaders::GuiShader();
+		gui_shader->Init();
+	}
+
+	scene::Scenes scene::In_Game_Scene::start(GLFWwindow* window)
+	{
+		raw_model = render_engine::LoadObjModel("res/House.obj");
+		texture = { render_engine::loader::LoadTexture("res/Texture.png") };
+		texture.shine_damper = 10;
+		texture.reflectivity = 0;
+		models::TexturedModel model = { raw_model, texture };
+		
+		int z = 0;
+		for (int i = 0; i < 5; ++i)
+		{
+			entities.push_back(entities::Entity(model, glm::vec3(0, -50, -50 - z), glm::vec3(0, 90, 0), 20));
+			z += (raw_model.model_size.x * 20);
+		}
+
+		lights.push_back(entities::Light(glm::vec3(0, 1000, -7000), glm::vec3(5, 5, 5)));
+		lights.push_back(entities::Light(glm::vec3(0, 0, -30), glm::vec3(2, 0, 2), glm::vec3(0.0001f, 0.0001f, 0.0001f)));
+		lights.push_back(entities::Light(glm::vec3(0, 0, -200), glm::vec3(0, 2, 0), glm::vec3(0.0001f, 0.0001f, 0.0001f)));
+
+		// GUI stuff
+		gui::Button button(render_engine::loader::LoadTexture("res/Mayo.png"), glm::vec2(0.5f, 0.0f), glm::vec2(0.25f, 0.25f));
+		button.SetHoverTexture(render_engine::loader::LoadTexture("res/Texture.png"));
+		button.SetClickedTexture(render_engine::loader::LoadTexture("res/Mayo.png"));
+		button.SetOnClickAction([]()
+		{
+			std::cout << "I got clicked on!" << std::endl;
+		});
+		guis.push_back(&button);
+	
+
+		while (return_value == scene::Scenes::INGAME)
+		{
+			update(window);
+			button.Update(window);
+			render();
+
+			glfwSwapBuffers(window);
+			glfwPollEvents();
+		}
+		shader->CleanUp();
+		gui_shader->CleanUp();
+		render_engine::loader::CleanUp();
+		return return_value;
+	}
+
+	void scene::In_Game_Scene::render()
+	{
+		// Render
+		render_engine::renderer::Prepare();
+
+		shader->Start();
+		shader->LoadSkyColor(render_engine::renderer::SKY_COLOR);
+		shader->LoadLights(lights);
+		shader->LoadViewMatrix(camera);
+
+		// Renders each entity in the entities list
+		for (entities::Entity& entity : entities)
+		{
+			render_engine::renderer::Render(entity, *shader);
+		}
+
+		// Render GUI items
+		render_engine::renderer::Render(guis, *gui_shader);
+
+		// Stop rendering the entities
+		shader->Stop();
+	}
+
+	void scene::In_Game_Scene::update(GLFWwindow* window)
+	{
+		camera.Move(window);
+	}
+
+	void scene::In_Game_Scene::onKey(GLFWwindow* window, int key, int scancode, int action, int mods)
+	{
+		if (glfwGetKey(window, GLFW_KEY_SPACE) == GLFW_PRESS)
+		{
+			return_value = scene::Scenes::STOP;
+		}
+	}
+
+}
diff --git a/src/scenes/in_Game_Scene.h b/src/scenes/in_Game_Scene.h
new file mode 100644
index 0000000..4581855
--- /dev/null
+++ b/src/scenes/in_Game_Scene.h
@@ -0,0 +1,22 @@
+#pragma once
+#include "scene.h"
+
+namespace scene
+{
+
+	class In_Game_Scene : public scene::Scene
+	{
+	private:
+		scene::Scenes return_value = scene::Scenes::INGAME;
+	
+	public:
+		In_Game_Scene();
+
+		Scenes start(GLFWwindow* window) override;
+		void render() override;
+		void update(GLFWwindow* window) override;
+		void onKey(GLFWwindow* window, int key, int scancode, int action, int mods) override;
+	};
+}
+
+
diff --git a/src/scenes/scene.cpp b/src/scenes/scene.cpp
new file mode 100644
index 0000000..7183938
--- /dev/null
+++ b/src/scenes/scene.cpp
@@ -0,0 +1,7 @@
+#include "scene.h"
+
+namespace scene
+{
+
+}
+
diff --git a/src/scenes/scene.h b/src/scenes/scene.h
new file mode 100644
index 0000000..a4d07bd
--- /dev/null
+++ b/src/scenes/scene.h
@@ -0,0 +1,31 @@
+#pragma once
+#include <GL/glew.h>
+#include <GLFW/glfw3.h>
+#include <map>
+
+
+namespace scene {
+
+	enum class Scenes
+	{
+		STARTUP,
+		INGAME,
+		GAMEOVER,
+		CALIBRATION,
+		STOP
+	};
+
+	class Scene
+	{
+	public:
+		virtual Scenes start(GLFWwindow* window) = 0;
+		virtual void render() = 0;
+		virtual void update(GLFWwindow* window) = 0;
+		virtual void onKey(GLFWwindow* window, int key, int scancode, int action, int mods) {};
+
+	};
+
+	
+}
+
+
diff --git a/src/scenes/startup_Scene.cpp b/src/scenes/startup_Scene.cpp
new file mode 100644
index 0000000..fe67b0f
--- /dev/null
+++ b/src/scenes/startup_Scene.cpp
@@ -0,0 +1,40 @@
+#include <GL/glew.h>
+#include <GLFW/glfw3.h>
+#include <map>
+#include "startup_Scene.h"
+
+namespace scene
+{
+
+	scene::Scenes scene::Startup_Scene::start(GLFWwindow *window)
+	{
+		while (return_value == scene::Scenes::STARTUP)
+		{
+			render();
+			update(window);
+
+			glfwSwapBuffers(window);
+			glfwPollEvents();
+		}
+
+		return return_value;
+	}
+
+	void scene::Startup_Scene::render() 
+	{
+
+	}
+
+	void scene::Startup_Scene::update(GLFWwindow* window)
+	{
+
+	}
+
+	void scene::Startup_Scene::onKey(GLFWwindow* window, int key, int scancode, int action, int mods)
+	{
+		if (glfwGetKey(window, GLFW_KEY_SPACE) == GLFW_PRESS)
+		{
+			return_value = scene::Scenes::INGAME;
+		}
+	}
+}
diff --git a/src/scenes/startup_Scene.h b/src/scenes/startup_Scene.h
new file mode 100644
index 0000000..277a750
--- /dev/null
+++ b/src/scenes/startup_Scene.h
@@ -0,0 +1,22 @@
+#pragma once
+#include "scene.h"
+#include <map>
+
+namespace scene
+{
+	extern GLFWwindow* window;
+
+	class Startup_Scene : public scene::Scene
+	{
+	private:
+		scene::Scenes return_value = scene::Scenes::STARTUP;
+
+	public:
+		Scenes start(GLFWwindow* window) override;
+		void render() override;
+		void update(GLFWwindow* window) override;
+		void onKey(GLFWwindow* window, int key, int scancode, int action, int mods) override;
+	};
+}
+
+
diff --git a/src/shaders/shader_program.cpp b/src/shaders/shader_program.cpp
index c02c73b..6feb2d9 100644
--- a/src/shaders/shader_program.cpp
+++ b/src/shaders/shader_program.cpp
@@ -1,4 +1,5 @@
 #include <GL/glew.h>
+#include <GLFW/glfw3.h>
 #include <iostream>
 #include <fstream>
 #include <vector>
diff --git a/wk2_fps.vcxproj b/wk2_fps.vcxproj
index 012e9bb..9b55093 100644
--- a/wk2_fps.vcxproj
+++ b/wk2_fps.vcxproj
@@ -20,6 +20,8 @@
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="src\collision\collision_handler.cpp" />
+    <ClCompile Include="src\scenes\in_Game_Scene.cpp" />
+    <ClCompile Include="src\scenes\scene.cpp" />
     <ClCompile Include="src\entities\camera.cpp" />
     <ClCompile Include="src\entities\collision_entity.cpp" />
     <ClCompile Include="src\entities\entity.cpp" />
@@ -32,10 +34,13 @@
     <ClCompile Include="src\shaders\shader_program.cpp" />
     <ClCompile Include="src\shaders\entity_shader.cpp" />
     <ClCompile Include="src\toolbox\toolbox.cpp" />
+    <ClCompile Include="src\scenes\startup_Scene.cpp" />
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="src\collision\collision.h" />
     <ClInclude Include="src\collision\collision_handler.h" />
+    <ClInclude Include="src\scenes\in_Game_Scene.h" />
+    <ClInclude Include="src\scenes\scene.h" />
     <ClInclude Include="src\entities\camera.h" />
     <ClInclude Include="src\entities\collision_entity.h" />
     <ClInclude Include="src\entities\entity.h" />
@@ -52,6 +57,7 @@
     <ClInclude Include="src\shaders\entity_shader.h" />
     <ClInclude Include="src\stb_image.h" />
     <ClInclude Include="src\toolbox\toolbox.h" />
+    <ClInclude Include="src\scenes\startup_Scene.h" />
   </ItemGroup>
   <PropertyGroup Label="Globals">
     <VCProjectVersion>16.0</VCProjectVersion>
diff --git a/wk2_fps.vcxproj.filters b/wk2_fps.vcxproj.filters
index 5d59244..695a96e 100644
--- a/wk2_fps.vcxproj.filters
+++ b/wk2_fps.vcxproj.filters
@@ -48,6 +48,15 @@
     <ClCompile Include="src\gui\gui_interactable.cpp">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="src\scenes\scene.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="src\scenes\in_Game_Scene.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="src\scenes\startup_Scene.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
     <ClCompile Include="src\entities\collision_entity.cpp">
       <Filter>Source Files</Filter>
     </ClCompile>
@@ -98,6 +107,15 @@
     <ClInclude Include="src\gui\gui_interactable.h">
       <Filter>Header Files</Filter>
     </ClInclude>
+    <ClInclude Include="src\scenes\scene.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+    <ClInclude Include="src\scenes\in_Game_Scene.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+    <ClInclude Include="src\scenes\startup_Scene.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
     <ClInclude Include="src\entities\collision_entity.h">
       <Filter>Header Files</Filter>
     </ClInclude>