Co-op

You are one of a kind. The best of all cleaning clones! But you can't clean a broken spaceship, so you need to save it first.

An extreme response to minor problems. MAXIMUM THUNDERNESS is a roguelike side-scrolling co-op action game where you battle space alien criminals attempting to conquer Earth through a series of increasingly petty crimes.

Massively multiplayer online sci-fi sandbox game

PC & VR Cross-platform action adventure game set in a comically dark world of weird and badass creatures. Gear up and invite your friends as these battles over the dominions of different Architects are ever-lasting. And choose carefully which clan you wish to serve.

Transformice Adventures is a multiplayer action-RPG set in the world of Transformice, featuring combat, exploration, pet care and a storyline! Stay tuned for development news!

Work alongside your friends to collect all the cosmic diamonds in a co-operative chaotic party platforming performance. Play as one of four aliens, each with their own unique ability. *CAUTION: Flashing lights in game may induce seizure*

A free isometric MMORPG built in 2002 on the Astonia 3 engine — still running, still unforgiving, still free. No microtransactions. No hand-holding. Just a brutal old-school MMO kept alive by a community that refused to let it die.

Sport videogame based in crossminton, an emerging racquet sport where the players play in two separated fields without net and using a custom flyer and racquets. It can be played as single 1 vs 1 or doubles 2 vs 2.

Action packed arcade game with numerous intricate puzzles involving fun, colorful food. Multiple modes to choose from with 100+ levels. Retro tile matching mechanics with challenging, new & unique features. Compete with your friends locally or online with Steam's Remote Play Together feature!

How many waves of enemies can you repel? Build and upgrade towers, sharpen your swords and arrows, prepare spells and fight off all the enemies, by yourself in single-player or with friends in co-op mode!

Wake on a floating island and find the way home with your friends. Gather, craft and build on Haven, hunt across islands linked by magic teleporters, help Jamie run his farm, and unwind at the festival square and The Beast coaster.

Sage Ball is a local multiplayer sports game where players choose from one of several magical users to compete in scoring points by getting the ball in the other player's goal.