diff --git a/Project.xml b/Project.xml
index d0695e1..d3561ed 100644
--- a/Project.xml
+++ b/Project.xml
@@ -22,7 +22,7 @@
 	<window if="html5" resizable="false" />
 
 	<!--Desktop-specific-->
-	<window if="desktop" orientation="landscape" fullscreen="false" resizable="true" />
+	<window if="desktop" orientation="landscape" fullscreen="true" resizable="false" />
 
 	<!--Mobile-specific-->
 	<window if="mobile" orientation="portrait" fullscreen="false" width="576" height="1024" resizable="false"/>
@@ -90,4 +90,4 @@
 	<setenv name="GooglePlayID" value="" if="android"/>
 
 	<android target-sdk-version="26" />
-</project>
+</project>
\ No newline at end of file
diff --git a/assets/images/background.png b/assets/images/background.png
deleted file mode 100644
index bb077b3..0000000
Binary files a/assets/images/background.png and /dev/null differ
diff --git a/assets/images/ground.png b/assets/images/ground.png
deleted file mode 100644
index 27ad982..0000000
Binary files a/assets/images/ground.png and /dev/null differ
diff --git a/assets/images/mobilebg.png b/assets/images/mobilebg.png
new file mode 100644
index 0000000..ac7997b
Binary files /dev/null and b/assets/images/mobilebg.png differ
diff --git a/source/GameOverState.hx b/source/GameOverState.hx
index bb4c7c2..b95a965 100644
--- a/source/GameOverState.hx
+++ b/source/GameOverState.hx
@@ -4,6 +4,7 @@ import flixel.FlxG;
 import flixel.FlxSprite;
 import flixel.FlxState;
 import flixel.text.FlxText;
+import openfl.system.System;
 
 class GameOverState extends FlxState
 {
@@ -37,6 +38,13 @@ class GameOverState extends FlxState
 		var enterText:FlxText = new FlxText(0, FlxG.height / 2 + 150, FlxG.width, "Press Enter or Tap to Play Again");
 		enterText.setFormat(AssetPaths.prstart__ttf, 20, 0xffffffff, "center");
 		add(enterText);
+
+		// press x to exit
+		#if desktop
+		var exitText:FlxText = new FlxText(0, FlxG.height - 50, FlxG.width, "Press X to Exit");
+		exitText.setFormat(AssetPaths.prstart__ttf, 20, 0xffffffff, "center");
+		add(exitText);
+		#end
 	}
 
 	override public function update(elapsed)
@@ -58,5 +66,10 @@ class GameOverState extends FlxState
 			PlayState.score = 0;
 			FlxG.switchState(new PlayState());
 		}
+
+		#if desktop
+		if (FlxG.keys.anyJustPressed([X, ESCAPE]))
+			System.exit(0);
+		#end
 	}
 }
diff --git a/source/Main.hx b/source/Main.hx
index 4890464..4dd517f 100644
--- a/source/Main.hx
+++ b/source/Main.hx
@@ -8,6 +8,7 @@ class Main extends Sprite
 	public function new()
 	{
 		super();
+
 		addChild(new FlxGame(0, 0, MainMenuState));
 	}
 }
diff --git a/source/MainMenuState.hx b/source/MainMenuState.hx
index 52cd383..66a9439 100644
--- a/source/MainMenuState.hx
+++ b/source/MainMenuState.hx
@@ -4,6 +4,7 @@ import flixel.FlxG;
 import flixel.FlxState;
 import flixel.text.FlxText;
 import flixel.ui.FlxButton;
+import openfl.system.System;
 
 class MainMenuState extends FlxState
 {
@@ -25,6 +26,10 @@ class MainMenuState extends FlxState
 		creditsText.setFormat(AssetPaths.prstart__ttf, 8, 0xFFFFFFFF, "center");
 		add(creditsText);
 
+		// exit game button
+		var exitButton:FlxButton = new FlxButton(FlxG.width - 50, 0, "X", exitGame);
+		add(exitButton);
+
 		// settings button
 		/*var settingsButton:FlxButton = new FlxButton(FlxG.width / 2 - 50, FlxG.height / 2 + 100, "Settings", settingsButt);
 			add(settingsButton); */
@@ -46,4 +51,9 @@ class MainMenuState extends FlxState
 		FlxG.switchState(new SettingsState());
 		#end
 	}
+
+	function exitGame()
+	{
+		System.exit(0);
+	}
 }
diff --git a/source/PlayState.hx b/source/PlayState.hx
index 1df7d9d..653ac58 100644
--- a/source/PlayState.hx
+++ b/source/PlayState.hx
@@ -11,7 +11,6 @@ class PlayState extends FlxState
 {
 	var player:Player;
 
-	var ground:FlxSprite;
 	var pipeTop:FlxSprite;
 	var pipeBottom:FlxSprite;
 	var pipePieceBottom:FlxSprite;
@@ -35,29 +34,21 @@ class PlayState extends FlxState
 	{
 		super.create();
 
-		// create background
 		var backgroundCol:FlxSprite = new FlxSprite().makeGraphic(FlxG.width, FlxG.height, 0xFF96FFFF);
 		add(backgroundCol);
 
-		var background:FlxSprite = new FlxSprite(0, 0, AssetPaths.background__png);
-		background.setGraphicSize(FlxG.width);
+		var background:FlxSprite = new FlxSprite(0, 0, AssetPaths.mobilebg__png);
+		background.setGraphicSize(FlxG.width, FlxG.height);
 		background.updateHitbox();
-		background.setPosition(0, FlxG.height - background.height);
 		add(background);
 
-		ground = new FlxSprite(0, 0, AssetPaths.ground__png);
-		ground.setGraphicSize(FlxG.width);
-		ground.updateHitbox();
-		ground.y = FlxG.height - ground.height;
-		add(ground);
-
 		scoreUI = new FlxText(0, 0, FlxG.width, "0");
 		scoreUI.setFormat(AssetPaths.prstart__ttf, 64, 0xFFFFFFFF, "center");
 		scoreUI.y = FlxG.height - scoreUI.height;
 		uiTextGroup.add(scoreUI);
 		add(scoreUI);
 
-		player = new Player(24, FlxG.height * 0.5);
+		player = new Player(FlxG.width * 0.5, FlxG.height * 0.5);
 		add(player);
 
 		createPipe();
@@ -71,7 +62,7 @@ class PlayState extends FlxState
 
 		scoreUI.text = "" + score;
 
-		if (player.y <= 0 || player.y >= FlxG.height - (ground.height * 0.5))
+		if (player.y <= 0 || player.y >= FlxG.height - 124)
 		{
 			FlxG.switchState(new GameOverState());
 		}