Here is a fun game from developer Smarty P . The game uses the accelerometer for control but touch can also be used. Another neat feature is the changing of time of the day. From his youtube page
This is a video of the game Hungry Castaway for Windows Phone 7. This game is targeted at the family market, and is fun for all ages.
This is an ‘indie’ game – meaning it was created by me in my spare time, not a professional game development company.
Be sure to leave him some constructive feedback of what you think of the game.