Warhammer 40k’s single player game Space Marine has you running around looking like a marine from Starcraft killing hordes of orcs. You play as Captain Titus who runs around with guns and a chainsword. A chainsword? If you weren’t sure what a chainsword was then this video from Relic tells you.
In short, though, it’s a sword that is also a chainsaw. A sword of chains would be cool too though.
Warhammer 40k: Space Marine will be out for Xbox 360, Playstation 3, and PC on September 6th, 2011