Simple XNA4 games like ishoot scorched-earth tower-defense

I would like a scorched earth/ishoot xna cl-o-n-e, tower defense, card/poker games, etc. The code should run on xna 4, have good clear documentation, should be original code that we will have rights to. should have settings, high scores, upgrades, etc. that the good games have. puzzle games too like bejeweled would be nice. the game should be written for desktop or xbox, but port to wp7 (windows phone 7) easily. Let me know what you can do for this project?