diff --git a/src/CloonelJumpConfig.h.in b/src/CloonelJumpConfig.h.in
index 70c715f..ad02d3a 100644
--- a/src/CloonelJumpConfig.h.in
+++ b/src/CloonelJumpConfig.h.in
@@ -21,11 +21,13 @@
 #define id5FC1D6EEF9DF41E790068FBC6753035F
 
 #define GameName "@PROJECT_NAME@"
-#define GameVersionMinor 1
+#define GameVersionMinor 11
 #define GameVersionMajor 0
 
-#define DEF_WIN_WIDTH 800
-#define DEF_WIN_HEIGHT 600
+#define REFERENCE_WIDTH 480
+#define REFERENCE_HEIGHT 600
+#define DEF_WIN_WIDTH REFERENCE_WIDTH
+#define DEF_WIN_HEIGHT REFERENCE_HEIGHT
 
 #define GAME_BASE_PATH "@CMAKE_SOURCE_DIR@"
 
diff --git a/src/character.cpp b/src/character.cpp
index 8301e8b..310b80e 100644
--- a/src/character.cpp
+++ b/src/character.cpp
@@ -49,7 +49,7 @@ namespace cloonel {
 	///-------------------------------------------------------------------------
 	void Character::Prepare() {
 		const SDLMain* const sdlmain = m_texture->SDLObject();
-		const int2 screensize(sdlmain->DefWidthHeight());
+		const int2 screensize(sdlmain->WidthHeight());
 
 		m_texture->Reload();
 	}
diff --git a/src/gameplaysceneclassic.cpp b/src/gameplaysceneclassic.cpp
index eacd11f..d26447e 100644
--- a/src/gameplaysceneclassic.cpp
+++ b/src/gameplaysceneclassic.cpp
@@ -77,7 +77,7 @@ namespace cloonel {
 		AddDrawable(m_wallpaper.get());
 		AddDrawable(m_player.get());
 
-		m_moverSine->SetPower(static_cast<float>(SDLObject()->DefWidthHeight().y() / 2));
+		m_moverSine->SetPower(static_cast<float>(SDLObject()->WidthHeight().y() / 2));
 	}
 
 	///--------------------------------------------------------------------------
diff --git a/src/main.cpp b/src/main.cpp
index 2633cb6..176ac65 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -21,6 +21,7 @@
 #include "sdlmain.hpp"
 #include "physicsfswrapper.hpp"
 #include "gameplaysceneclassic.hpp"
+#include "vector.hpp"
 #include <iostream>
 #include <stdexcept>
 #include <ciso646>
@@ -44,7 +45,7 @@ int main (int, char* parArgv[]) {
 	std::cout << GameName << " v" << GameVersionMajor << "." << GameVersionMinor << std::endl;
 
 	int retVal = 0;
-	cloonel::SDLMain sdlmain(GameName, DEF_WIN_WIDTH, DEF_WIN_HEIGHT);
+	cloonel::SDLMain sdlmain(GameName, cloonel::ushort2(DEF_WIN_WIDTH, DEF_WIN_HEIGHT), cloonel::ushort2(REFERENCE_WIDTH, REFERENCE_HEIGHT));
 	try {
 		cloonel::PhysicsFSWrapper physfs(parArgv[0]);
 		physfs.Append(GAME_BASE_PATH "/resources/", "resources");
diff --git a/src/sdlmain.cpp b/src/sdlmain.cpp
index 8670c12..a83cad3 100644
--- a/src/sdlmain.cpp
+++ b/src/sdlmain.cpp
@@ -27,12 +27,27 @@ namespace cloonel {
 		bool initialized;
 	};
 
+	namespace {
+		float2 GetScaling (ushort2 parRes, ushort2 parRef) __attribute__((pure));
+
+		///----------------------------------------------------------------------
+		///----------------------------------------------------------------------
+		float2 GetScaling (ushort2 parRes, ushort2 parRef) {
+			return float2(
+				static_cast<float>(parRes.x()) / static_cast<float>(parRef.x()),
+				static_cast<float>(parRes.y()) / static_cast<float>(parRef.y())
+			);
+		}
+	} //unnamed namespace
+
 	///------------------------------------------------------------------------
 	///------------------------------------------------------------------------
-	SDLMain::SDLMain (const char* parGameName, int parWidth, int parHeight) :
+	SDLMain::SDLMain (const char* parGameName, ushort2 parRes, ushort2 parReferenceRes) :
 		m_gameName(parGameName),
 		m_localData(new LocalData),
-		m_defWH(parWidth, parHeight)
+		m_WHScaling(GetScaling(parRes, parReferenceRes)),
+		m_WH(parRes),
+		m_WHRef(parReferenceRes)
 	{
 	}
 
@@ -60,7 +75,7 @@ namespace cloonel {
 			throw std::runtime_error(SDL_GetError());
 		parInitSDL.initialized = true;
 
-		SDL_Window* const win = SDL_CreateWindow(m_gameName.c_str(), 100, 100, m_defWH.x(), m_defWH.y(), SDL_WINDOW_SHOWN);
+		SDL_Window* const win = SDL_CreateWindow(m_gameName.c_str(), 100, 100, m_WH.x(), m_WH.y(), SDL_WINDOW_SHOWN);
 		if (!win)
 			throw std::runtime_error(SDL_GetError());
 		parInitSDL.window = win;
diff --git a/src/sdlmain.hpp b/src/sdlmain.hpp
index 78f8748..f11b4b9 100644
--- a/src/sdlmain.hpp
+++ b/src/sdlmain.hpp
@@ -28,12 +28,13 @@ struct SDL_Renderer;
 namespace cloonel {
 	class SDLMain {
 	public:
-		SDLMain ( const char* parGameName, int parWidth, int parHeight );
+		SDLMain ( const char* parGameName, ushort2 parRes, ushort2 parReferenceRes );
 		~SDLMain ( void ) noexcept;
 
 		void Init ( void );
 		SDL_Renderer* GetRenderer ( void );
-		const int2& DefWidthHeight ( void ) const { return m_defWH; }
+		const ushort2& WidthHeight ( void ) const { return m_WH; }
+		const float2& WHScaling ( void ) const { return m_WHScaling; }
 
 	private:
 		struct LocalData;
@@ -43,7 +44,9 @@ namespace cloonel {
 
 		const std::string m_gameName;
 		std::unique_ptr<LocalData> m_localData;
-		const int2 m_defWH;
+		float2 m_WHScaling;
+		ushort2 m_WH;
+		const ushort2 m_WHRef;
 	};
 } //namespace cloonel
 
diff --git a/src/texture.cpp b/src/texture.cpp
index e8b2683..007836a 100644
--- a/src/texture.cpp
+++ b/src/texture.cpp
@@ -271,7 +271,7 @@ namespace cloonel {
 	///--------------------------------------------------------------------------
 	void Texture::Render (int2 parPos, ushort2 parSize) const {
 		assert(IsLoaded());
-		const int screenHeight = m_sdlmain->DefWidthHeight().y();
+		const int screenHeight = m_sdlmain->WidthHeight().y();
 		const SDL_Rect dest = { parPos.x(), screenHeight - parPos.y() - parSize.y(), parSize.x(), parSize.y() };
 		SDL_RenderCopy(m_sdlmain->GetRenderer(), m_texture, nullptr, &dest);
 	}