Cheeky, a developer out of Corfu, Greece, who normally develops games for mobile phones, has created the world's first commercial XNA game.
XNA is a set of inexpensive developing tools created by Microsoft to simplify the game development process and streamline the process for "indie" developers, game design students or hobbyists to create titles that can be made available on Xbox Live Arcade.
Cheeky's title is an arcade puzzle game called Blobbit Push, and is a part of a series of other Blobbit games. To download a demo or the full game online, visit the Blobbit Website. Demos are available in XNA, Java and as a Mac widget.