it be not every day that Microsoft shows off it be own technology being used for the forces a evil, but it did just that during company head Steve Ballmer's keynote at Mobile World Congress. Engadget be on hand t' witness Kinect Adventures' Rally Ball minigame being controlled not just by a Kinect, but also two Windows Phone 7 devices controlling the flow a rubber balls being distributed. it be all fun 'n games until the gentleman playing be overtaken by a monstrous flood a rubber balls.

Microsoft notes that the demonstration be strictly a "tech demo," but it certainly hints at the possible future a Windows Phone/Xbox integration. It also opens the pandora's box-like door t' Kinect/WP7/Surface crossovers, finally. pillage a look at synergy in action just after the break.