HeartBit Interactive has released a free Windows version of its 2D multiplayer arena shooter Miner Warfare to celebrate its 1,000th copy sold on the Xbox Live Indie Games service.

Released for XBLIG earlier this month, Miner Warfare challenges players to dig up treasure and fend off their opponents in a variety of underground maps. In a novel twist, the game supports up to eight players simultaneously, with each player handling one half of an Xbox 360 controller. Sounds intimate!

The Xbox Live Indie Games version of Miner Warfare is priced at 80 Microsoft points ($1).