The XNA Game Studio Express, a developer pack that will allow you to make home-brew games for the Xbox 360 and the PC, is available for Beta download. Unfortunately this version only supports Windows XP SP2 and not Xbox 360 or Windows Vista. But, it’s a good start to get your feet wet with game development, gearing up for the Xbox 360 compatible version at the end of the year.
https://gizmodo.com/microsoft-to-let-regular-joes-develop-xbox-360-games-193954
Oh, and did we mention this is free?
Download Page [Microsoft via Major Nelson via Crunchgear]
