Hidden Online Co-Op Games on Steam

Unlike generic lists, our strategy game recommendations use a rigorous analysis of Steam user reviews to identify and feature only the best, community-validated online co-op games. For those who prefer not to search, check out lists of the most played, top deals and best free to play Online Co-Op games on Steam.

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FootLOL: Epic Soccer League The craziest soccer management game you have ever played! Use mines, aliens, cows, guns and other crazy cheats to decimate the opposing team and protect your players. Play against your friends or AI opponents!

Price -95% 0.54€
Rating 7.9
Release 16 Apr 2014
Tiny Brains "Tiny Brains" is a cooperative action puzzler that follows four super-powered lab animals in their attempt to escape a mad scientist's experiments. In this joyously chaotic multiplayer game, the four "Tiny Brains" must combine their unique physics-based powers to navigate through a trick-ridden maze.

Price 8.19€
Rating 7.4
Release 11 Dec 2013
Foul Play Play as the daemon-hunter Baron Dashforth in a side-scrolling co-op brawler set entirely on the grand spectacle of a theatre stage that rewards performance over pummeling. Perform shattering takedowns and reversals!

Price -30% 10.56€
Rating 7.5
Release 18 Sep 2013
Critter Crunch Using Critter Crunch's 'Food Chain' mechanic, players will eat their way through a smorgasbord of levels and gorge on a feast of modes, including Co-op and Versus multiplayer.

Price 4.99€
Rating 8.7
Release 11 Sep 2012
Earth Defense Force: Insect Armageddon Thousands of giant insects and aliens once again ravage the earth, and only the Earth Defense Force can stop them.

Price -34% 6.62€
Rating 8.3
Release 14 Dec 2011
The Haunted: Hells Reach Winner of 2010′s Make Something Unreal contest, The Haunted: Hells Reach is a fast-paced horror game where your goal is to liberate cursed places and survive the assault of Hell.

Price -75% 2.24€
Rating 8.1
Release 24 Oct 2011