diff --git a/core/src/fr/evolving/UI/ButtonLevel.java b/core/src/fr/evolving/UI/ButtonLevel.java
index 361b588..6bc4aac 100644
--- a/core/src/fr/evolving/UI/ButtonLevel.java
+++ b/core/src/fr/evolving/UI/ButtonLevel.java
@@ -22,12 +22,14 @@ public class ButtonLevel extends ImageTextButton {
 	TextureRegion Finalled,Locked;
 	Label Thelabel;
 	float scale;
+	float ratio;
 	ImageTextButtonStyle style;
 	LabelStyle stylelabel;
 	
-	public ButtonLevel(Level level, boolean Activated) {
+	public ButtonLevel(Level level, boolean Activated,float ratio) {
 		super(level.Name, AssetLoader.Skin_level, "world"+String.valueOf(level.aWorld));
 		this.level=level;
+		this.ratio=ratio;
 		this.Activated=Activated;
 		if (level.Special==true) {
 			Finalled=AssetLoader.Skin_level.getAtlas().findRegion("boss");
@@ -38,17 +40,17 @@ public class ButtonLevel extends ImageTextButton {
 		}
 		this.setColor(1f, 0.47f+(float)level.X/1024f*0.529f,0.607f+(float)level.X/768f*0.392f, 1f);
 		this.scale=1f;
-		this.setBounds(level.X, level.Y*AssetLoader.ratio, 111*scale, 125*scale);
+		this.setBounds(level.X, level.Y*ratio, 111*scale, 125*scale);
 		Thelabel=new Label(level.Element, AssetLoader.Skin_level,"Levelshort");
 		Thelabel.setColor(level.X/1024f,level.X/1024f,level.X/1024f,1f);
-		Thelabel.setPosition(level.X+54*scale, level.Y*AssetLoader.ratio+20*scale, Align.bottom | Align.center);
+		Thelabel.setPosition(level.X+54*scale, level.Y*ratio+20*scale, Align.bottom | Align.center);
 	}
 	
 	@Override	
 	public void setScale(float scale) {
 		this.scale=scale;
-		this.setBounds(level.X, level.Y*AssetLoader.ratio, 111*scale, 125*scale);
-		Thelabel.setPosition(level.X+54*scale, level.Y*AssetLoader.ratio+20*scale, Align.bottom | Align.center);
+		this.setBounds(level.X, level.Y*ratio, 111*scale, 125*scale);
+		Thelabel.setPosition(level.X+54*scale, level.Y*ratio+20*scale, Align.bottom | Align.center);
 		stylelabel=Thelabel.getStyle();
 		//stylelabel.font.setScale(scale);
 		Thelabel.setStyle(stylelabel);
@@ -71,7 +73,7 @@ public class ButtonLevel extends ImageTextButton {
 		level.X=x;
 		level.Y=y;
 		Thelabel.setColor(level.X/1024f,level.X/1024f,level.X/1024f,1f);
-		Thelabel.setPosition(level.X+54*scale, level.Y*AssetLoader.ratio+20*scale, Align.bottom | Align.center);
+		Thelabel.setPosition(level.X+54*scale, level.Y*ratio+20*scale, Align.bottom | Align.center);
 		this.setColor(1f, 0.47f+(float)level.X/1024f*0.529f,0.607f+(float)level.X/768f*0.392f, 1f);
 	}
 	
@@ -79,10 +81,10 @@ public class ButtonLevel extends ImageTextButton {
 	public void draw(Batch batch, float parentAlpha) {
 		super.draw(batch, parentAlpha);
 		if (level.Special) {
-			batch.draw(Finalled,level.X,level.Y*AssetLoader.ratio,Finalled.getRegionWidth()*scale,Finalled.getRegionHeight()*scale);
+			batch.draw(Finalled,level.X,level.Y*ratio,Finalled.getRegionWidth()*scale,Finalled.getRegionHeight()*scale);
 		}
 		if (!Activated) {
-			batch.draw(Locked,level.X+this.getWidth()-Locked.getRegionWidth(),level.Y*AssetLoader.ratio+this.getHeight()-Locked.getRegionHeight(),Locked.getRegionWidth()*scale,Locked.getRegionHeight()*scale);
+			batch.draw(Locked,level.X+this.getWidth()-Locked.getRegionWidth(),level.Y*ratio+this.getHeight()-Locked.getRegionHeight(),Locked.getRegionWidth()*scale,Locked.getRegionHeight()*scale);
 		}
 		Thelabel.draw(batch, 1f);
 	}
diff --git a/core/src/fr/evolving/assets/Preference.java b/core/src/fr/evolving/assets/Preference.java
index 5478635..deb7bb4 100644
--- a/core/src/fr/evolving/assets/Preference.java
+++ b/core/src/fr/evolving/assets/Preference.java
@@ -1,7 +1,10 @@
 package fr.evolving.assets;
 
 import com.badlogic.gdx.Gdx;
+import com.badlogic.gdx.Graphics;
+import com.badlogic.gdx.Graphics.DisplayMode;
 import com.badlogic.gdx.Preferences;
+import com.badlogic.gdx.math.Vector2;
 
 public class Preference {
 	public static Preferences prefs;
@@ -13,7 +16,45 @@ public class Preference {
 		if (prefs.contains("log"))
 			return prefs.getInteger("log");
 		else
+		{
+			defaults();
 			return Gdx.app.LOG_INFO;
+		}
+	}
+	
+	public static Vector2 getmaxresolution() {
+		Graphics.DisplayMode[] modes=Gdx.graphics.getDisplayModes();
+		int totalpixel=0;
+		int res;
+		for(DisplayMode mode:modes) {
+			int temppixel=mode.height*mode.width;
+			if (temppixel>totalpixel) totalpixel=temppixel;
+		}
+		for(DisplayMode mode:modes)
+			if (totalpixel==mode.height*mode.width)
+				return new Vector2(mode.width,mode.height);
+		return null;
+	}
+	
+	public static void defaults() {
+		Vector2 maxres=getmaxresolution();
+		Gdx.app.log("Preferences","Preference par defaut avec resolution native :"+maxres.x+"x"+maxres.y);
+		Preference.prefs.putInteger("ResolutionX", (int)maxres.x);
+		Preference.prefs.putInteger("ResolutionY", (int)maxres.y);
+		Preference.prefs.putInteger("Resolution", 9);
+		Preference.prefs.putBoolean("Fullscreen", true);
+		Preference.prefs.putBoolean("Sound", true);
+		Preference.prefs.putBoolean("Tutorial", true);
+		Preference.prefs.putBoolean("VSync", true);
+		Preference.prefs.putBoolean("Refresh", false);
+		Preference.prefs.putBoolean("Animation", true);
+		Preference.prefs.putBoolean("Language", false);	
+		Preference.prefs.putFloat("Effect", 1.0f);
+		Preference.prefs.putFloat("Music",0.75f);
+		Preference.prefs.putInteger("Adaptation", 1);
+		Preference.prefs.putInteger("Quality", 2);	
+		Preference.prefs.putInteger("log", Gdx.app.LOG_INFO);
+		Preference.prefs.flush();
 	}
 	
 	public static void debug() {
diff --git a/core/src/fr/evolving/screens/GameScreen.java b/core/src/fr/evolving/screens/GameScreen.java
index 6364207..94b7091 100644
--- a/core/src/fr/evolving/screens/GameScreen.java
+++ b/core/src/fr/evolving/screens/GameScreen.java
@@ -7,9 +7,11 @@ import java.util.Iterator;
 import java.util.Timer;
 import java.util.TimerTask;
 
+import com.badlogic.gdx.Application.ApplicationType;
 import com.badlogic.gdx.Game;
 import com.badlogic.gdx.Gdx;
 import com.badlogic.gdx.Graphics.DisplayMode;
+import com.badlogic.gdx.Graphics;
 import com.badlogic.gdx.InputMultiplexer;
 import com.badlogic.gdx.InputProcessor;
 import com.badlogic.gdx.Screen;
@@ -153,15 +155,23 @@ public class GameScreen implements Screen {
 			rmax("resolution Native",0,0)
 			;
 		    private final String text;
-		    private final int resx,resy;
+		    private int resx,resy;
+		    boolean full;
 		    private resolutions(final String text,int resx,int resy) {
 		        this.text = text;
 		        this.resx=resx;
 		        this.resy=resy;
 		    }
 		    @Override
-		    public String toString() {
-		        return text;
+		    public String toString()
+		    {
+		    	if (full)
+		    		return text+" Fullscreen";
+		    	else
+		    		return text;
+		    }
+		    public void SetFull(boolean fullscreen) {
+		    	full=fullscreen;
 		    }
 		    public int getResolutionX() {
 		        return resx;
@@ -169,6 +179,12 @@ public class GameScreen implements Screen {
 		    public int getResolutionY() {
 		        return resy;
 		    }
+		    public void setResolutionX(int x) {
+		        resx=x;
+		    }
+		    public void setResolutionY(int y) {
+		    	resy=y;
+		    }
 		}
 	GestureDetector gesturedetector;
 
@@ -262,7 +278,7 @@ public class GameScreen implements Screen {
 		objectives=new Objectives();
 		objectives.setVictory(level.Victory);
 		objectives.setPosition(890,AssetLoader.height-95);
-		buttonlevel=new ButtonLevel(level,true);
+		buttonlevel=new ButtonLevel(level,true,1.0f);
 		buttonlevel.setPosition(1760,AssetLoader.height-125);
 		Gdx.app.debug(getClass().getSimpleName(),"Création de la barre d'information");
 		info_tech=new ImageTextButton("0",AssetLoader.Skin_level,"info_tech");
@@ -645,7 +661,7 @@ public class GameScreen implements Screen {
 		stage_info.addActor(info_cout);
 		stage_info.addActor(info_desc);	
 		stage_menu.addActor(map);
-		stage_tooltip.addActor(tooltip);		
+		//stage_tooltip.addActor(tooltip);		
 		stage.addActor(objectives);
 		stage.addActor(buttonlevel);
 		stage.addActor(rayon);
@@ -886,7 +902,6 @@ public class GameScreen implements Screen {
 	}
 	 
 	public Table Createoption() {
-		Table layer = new Table();
 		winOptions = new Window("Options", AssetLoader.Skin_ui);
 		winOptions.add(SettingsVideo()).row();
 		winOptions.add(SettingsAudio()).row();
@@ -997,6 +1012,22 @@ public class GameScreen implements Screen {
 		tablev3.add(selTexturequal).left().row();
 		table.add(tablev3).left();
 		table.row();
+		if(Gdx.app.getType() == ApplicationType.Desktop) {
+			Graphics.DisplayMode[] modes=Gdx.graphics.getDisplayModes();
+			for(resolutions res:resolutions.values()) {
+				res.SetFull(false);
+				for(DisplayMode mode:modes) {
+					if (res.resx==mode.width && res.resy==mode.height)
+						res.SetFull(true);
+				}
+			}
+			Vector2 maxres=Preference.getmaxresolution();
+			resolutions.rmax.SetFull(true);
+			resolutions.rmax.setResolutionX((int)maxres.x);
+			resolutions.rmax.setResolutionY((int)maxres.y);
+		}
+		else
+			selResolution.setDisabled(true);
 		return table;
 	}
 	
diff --git a/core/src/fr/evolving/screens/LevelScreen.java b/core/src/fr/evolving/screens/LevelScreen.java
index 4928b2b..abb99a2 100644
--- a/core/src/fr/evolving/screens/LevelScreen.java
+++ b/core/src/fr/evolving/screens/LevelScreen.java
@@ -74,7 +74,7 @@ public class LevelScreen implements Screen {
 		buttonLevels = new ButtonLevel[10];
 		for (Level level :thelevels) {
 			if (level!=null && level.aWorld==aworld) {
-				buttonLevels[i]=new ButtonLevel(level,true);
+				buttonLevels[i]=new ButtonLevel(level,true,AssetLoader.ratio);
 				Gdx.app.debug(getClass().getSimpleName(),"Ajout du niveau :"+level.Name+" N°"+String.valueOf(level.aLevel));
 				buttonLevels[i++].addListener(new ClickListener(){
 		        @Override