The problem with launching a multiplayer shooter is that players are part of the content. Without players, you’ve only got half a package, even if there is a single-player mode. MercurySteam’s Raiders of the Broken Planet (a Gears of War-styled co-op shooter with a light PvP twist) has always looked rather nice, but without people playing it, it’s a hard sell, and the game just never got off the ground.
In an attempt to zap some life back into Raiders in time for the next episodic campaign release, for the next two days, you can grab the entire game (including three DLC solo/co-op campaigns) free on Steam to keep forever. Grab it now, and you’ve got something for your crew to do over the weekend.