Cannon Brawl is dropping off an alpha version, available to download and play for free on PC. The game is a 2D mix of multiplayer action and real-time strategy, in which you control a little zeppelin that can build structures and fire cannons.
Unfortunately, this is an early version of the game, so it likely has plenty of bugs, performance issues, and other compatibility problems. But the devs want to get the game in your hands, so if you're in the forgiving mood you can download it starting now.
Cannon Brawl has also appeared on Steam Greenlight, and is aiming for the Xbox sometime in the future.