I just finished my first go at creating a card game for the Windows 7 Phone. I chose to do Hi Low because it had the easiest rules to remember aka easiest game play to program. The coolest bit of this app is that I didn't use images for the cards, instead I embedded a custom true-type font into the app. It works well but has some formating issues. I didn't realize how hard it is to play Hi Low... The Best I have scored is 12 cards so far.