diff --git a/framework/platform-dx/soundeffect.cpp b/framework/platform-dx/soundeffect.cpp
index 6ddb870..261aa00 100644
--- a/framework/platform-dx/soundeffect.cpp
+++ b/framework/platform-dx/soundeffect.cpp
@@ -88,15 +88,15 @@ namespace xna {
 	void SoundEffect::Play() {
 		if (!impl->_dxSoundEffect)
 			return;
-
-		impl->_dxSoundEffect->Play();
+		
+		impl->_dxSoundEffect->Play();		
 	}
 
 	void SoundEffect::Play(float volume, float pitch, float pan) {
 		if (!impl->_dxSoundEffect)
-			return;
-
-		impl->_dxSoundEffect->Play(volume, pitch, pan);
+			return;		
+		
+		impl->_dxSoundEffect->Play(volume, pitch, pan);		
 	}
 
 	uptr<SoundEffectInstance> SoundEffect::CreateInstance() {
diff --git a/inc/game/gdevicemanager.hpp b/inc/game/gdevicemanager.hpp
index 4f0a1ff..4f00060 100644
--- a/inc/game/gdevicemanager.hpp
+++ b/inc/game/gdevicemanager.hpp
@@ -19,7 +19,7 @@ namespace xna {
 
 	public:
 		static constexpr int DefaultBackBufferWidth = 800;
-		static constexpr int DefaultBackBufferHeight = 600;
+		static constexpr int DefaultBackBufferHeight = 480;
 
 	protected:
 		bool CreateDevice();
diff --git a/inc/platform-dx/implementations.hpp b/inc/platform-dx/implementations.hpp
index a33e718..8b692a3 100644
--- a/inc/platform-dx/implementations.hpp
+++ b/inc/platform-dx/implementations.hpp
@@ -406,7 +406,7 @@ namespace xna {
 		HINSTANCE		_hInstance{ nullptr };
 		HWND			_windowHandle{ nullptr };
 		int				_windowWidth{ 800 };
-		int				_windowHeight{ 600 };
+		int				_windowHeight{ 480 };
 		HICON			_windowIcon{ nullptr };
 		HCURSOR			_windowCursor{ nullptr };
 		COLORREF		_windowColor{ RGB(0,0,0) };
diff --git a/samples/02_PlatfformerStarterKit/game.cpp b/samples/02_PlatfformerStarterKit/game.cpp
index 1f47d48..e9bfee1 100644
--- a/samples/02_PlatfformerStarterKit/game.cpp
+++ b/samples/02_PlatfformerStarterKit/game.cpp
@@ -20,9 +20,7 @@ namespace PlatformerStarterKit {
 
 		void Initialize() override {
 			auto game = reinterpret_cast<Game*>(this);
-			graphics = New<GraphicsDeviceManager>(game->shared_from_this());
-			graphics->PreferredBackBufferWidth(BackBufferWidth);
-			graphics->PreferredBackBufferHeight(BackBufferHeight);
+			graphics = New<GraphicsDeviceManager>(game->shared_from_this());			
 			graphics->Initialize();
 
 			std::any device = graphicsDevice;
@@ -130,11 +128,9 @@ namespace PlatformerStarterKit {
 		sptr<Texture2D> diedOverlay = nullptr;
 		int levelIndex = -1;
 		sptr<Level> level = nullptr;
-		bool wasContinuePressed;
+		bool wasContinuePressed = false;
 		TimeSpan WarningTime = TimeSpan::FromSeconds(30);
 		static constexpr int TargetFrameRate = 60;
-		static constexpr int BackBufferWidth = 1280;
-		static constexpr int BackBufferHeight = 720;
 		static constexpr Buttons ContinueButton = Buttons::A;
 	};
 }
diff --git a/samples/02_PlatfformerStarterKit/gem.cpp b/samples/02_PlatfformerStarterKit/gem.cpp
index d562288..49ff501 100644
--- a/samples/02_PlatfformerStarterKit/gem.cpp
+++ b/samples/02_PlatfformerStarterKit/gem.cpp
@@ -28,7 +28,7 @@ namespace PlatformerStarterKit {
 
 	void Gem::OnCollected(xna::sptr<Player>& collectedBy)
 	{
-		collectedSound->Play();
+		collectedSound->Play();		
 	}
 
 	void Gem::Draw(xna::GameTime const& gameTime, xna::SpriteBatch& spriteBatch)
diff --git a/samples/02_PlatfformerStarterKit/level.cpp b/samples/02_PlatfformerStarterKit/level.cpp
index 761207f..384232e 100644
--- a/samples/02_PlatfformerStarterKit/level.cpp
+++ b/samples/02_PlatfformerStarterKit/level.cpp
@@ -186,10 +186,9 @@ namespace PlatformerStarterKit {
         for (size_t y = 0; y < Height(); ++y) {
             for (size_t x = 0; x < Width(); ++x) {                
                 auto& texture = tiles[x][y].Texture;
-                if (texture) {               
-                    const auto p = xna::Vector2(x, y);
+                if (texture) { 
                     const auto s = xna::Vector2(x, y);
-                    const auto position = p * s;
+                    const auto position = s * Tile::Size();
                     spriteBatch.Draw(texture, position, xna::Colors::White);
                 }
             }
diff --git a/samples/02_PlatfformerStarterKit/tile.hpp b/samples/02_PlatfformerStarterKit/tile.hpp
index 9435b8a..f2374a7 100644
--- a/samples/02_PlatfformerStarterKit/tile.hpp
+++ b/samples/02_PlatfformerStarterKit/tile.hpp
@@ -12,8 +12,8 @@ namespace PlatformerStarterKit {
 	struct Tile {
 		xna::PTexture2D Texture = nullptr;
 		TileCollision Collision{};
-		constexpr static int Width = 64;
-		constexpr static int Height = 48;
+		constexpr static int Width = 40;
+		constexpr static int Height = 32;
 
 		constexpr static xna::Vector2 Size() {
 			return{ Width, Height };