Doritos has already announced the five finalists in their Doritos Unlock Xbox game development contest. The finalists were chosen for their beta creations of games that promote the chip snack brand. Now the contest's official web site has beta versions of all five finalists for anyone to download and play (the betas are browser based Shockwave games). People can vote for their favorites by November 18. The winner gets his game created as a full fledged Xbox Live Arcade title.