Humble Bundle's latest pay-what-you-want Weekly Bundle offers a slate of Steam-redeemable multiplayer games, including several with co-op modes.
Pay any amount for the bundle and you'll get Atlus' co-op run-and-gun shooter God Mode, along with the online competitive multiplayer shooter Primal Carnage and multiplayer RTS Boid. Beat the average purchase price and you'll also get the couch co-op platformer Chariot, competitive swordfighting action game Blade Symphony, and space combat sim GoD Factory: Wingmen.
Buyers who pay $10 or more for the bundle will additionally receive the Early Access co-op title Homebrew: Vehicle Sandbox. Humble's Multiplayer Mayhem bundle will be available through April 30th.
Source: Humblebundle.com