We need a Video Poker Facebook Application using Google App Engine with Python SDK
You can see as example a full working Video Poker game here:
http://www.poker-ca-la-aparate.ro/poker+ca+la+[url removed, login to view]
The facebook application will request facebook user permission to share some information to play the game.
The application will save user poker games in the database (credit, score, winnings) as personal user game history.