The iPhone version of Gravity Guy.
Next weekâ€™s Xbox Live game is Gravity Guy:
â€œGravity Guyâ€ In a world where gravity laws were broken, a brave guy was held captive for defying the rules. Not happy, he decided to escape. Your job: guide him through a world of impossible mazes, flipping gravity at will.
The game was quite successful on the iOS platform, selling more than 2 million copies and has now expanded to Windows Phone 7. Here it will of course cost a bit more, selling for $2.99, but will still feature local multi-player ie. on the same device.