Over at Indie DB, developer Turtle Sandbox has released a free alpha demo version of its in-progress artillery-RTS Cannon Brawl.

Playing somewhat like a more strategy-oriented version of Death Tank (or, if you'd prefer, a more action-oriented version of Worms), Cannon Brawl boasts multiple troop types and a variety of fully-destructible maps. The full game will feature a 20-mission campaign, along with an online competitive multiplayer mode.

Cannon Brawl is currently up for vote at Steam Greenlight.

[via Joystiq]