our new game Dead Horde uses Bullet.

Dead Horde is a top down shooter.
Features:
- Co-op top down shooter
Make your way through the levels with a huge variety of weapons. Use assault rifles, shotguns, grenades, miniguns and a lot more to unlock during the game
Fast paced action with seemingly never ending hordes of mutants.
Mutants evolve and become bigger, faster and stronger throughout the game.
Use vehicles solo or with a teammate to fight the mutants
Earn money by killing mutants and buy or upgrade weapons
http://www.deadhorde.com/
Some more screenshots

http://www.deadhorde.com/media/pics/dead_horde006.jpg
http://www.deadhorde.com/media/pics/dead_horde005.jpg
http://www.deadhorde.com/media/pics/dead_horde004.jpg
Cheers,
Axel