Finally, an outlet for that great crunchy-and-cheesy game idea that you've been mapping out in your school notebooks: Unlock Xbox from Microsoft and Doritos. How does it work?

1. Submit your Doritos-inspired game idea.

2. Five submissions will be developed into playable betas. Gamers will then play and vote for a winner, whose game will eventually emerge as a fully formed Live Arcade title.

3. Profit! Well, no, not you -- you don't get any money from the sales of your interactive Doritos advertisement. Doritos probably does. But you'll forever be known as "that guy who made the Doritos game," and that's worth something. Right?