We just released a free turn-based strategy game for Android called War Puzzle:Navy.   
	It's a fast, easy to play "beer and pretzels" style single player game.  
	It has 25 levels and the max time to play a level is about 15 minutes,  
	It's ad free and there are no in game purchases.  
	Please give it a try, we welcome feedback.  
	Thanks.  https://play.google.com/store/apps/details?id=com.hotmail.gmplayer.War_Puzzle