AT&T, Microsoft, phone maker HTC and mobile game outfit I-play are launching the AT&T Game Development Contest for Windows Mobile.

From May 1 through July 31, developers are invited to submit their Windows Mobile-compatible game. The grand prize is a mobile game developer contract with I-play, prime placement on the AT&T MEdia Mall and $25,000. Three finalists and 10 semi-finalists will also win prizes, but you'll have to visit http://developer.att.com/gamescontest to find out what they are. Games will be judged on gameplay value and quality, how unique and creative they are and their market potential.