Online co-op Side Scroller games

Every online co-op Side Scroller game on Steam we know of, newest first. Add tags or a price band to narrow it down.

Showing 1–10 of 101 games matching Side Scroller Β· updated 12 Oct 2026

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Free
Released
Price
Free
Players
πŸ‘₯ Up to 4 players
Reviews
50% of 2

Play with up to 4 players in a game of Moonball! A 2d platformer sport game involving skill and sometimes a bit of luck ;) Score on the opposing team by knocking the ball into their goal! Pick up weapons and wacky power-ups to give your team and advantage...or disadvantage.

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$
Released
Price
$ Β· Cheap
Players
πŸ‘₯ Up to 16 players
Reviews
100% of 3

Adoros is dying. A catastrophic Void Anomaly has torn open the planet’s surface, warping reality and unleashing forces no one fully understands. You are a Cube Crusader sent to crush the Anomaly, at any cost.

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$
Released
Price
$ Β· Cheap
Players
πŸ‘₯ Up to 2 players
Reviews
100% of 1

Welcome to the ultimate battle between the Fruit and hordes of monstrous invaders. Take command as a master strategist: recruit powerful fruit warriors, equip them with devastating gear, build the ultimate team, and defeat massive bosses.

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$
Released
Price
$ Β· Cheap
Players
πŸ‘₯ Up to 4 players
Reviews
100% of 3

Cute Rice Ball Friends Co-operative Action! Four players join forces to dig into the gimmicks of the map and escape the stage. Will you be able to show off your perfect chemistry with your friends or will you be a trawler?

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$
Released
Price
$ Β· Cheap
Players
πŸ‘₯ Not stated
Reviews
0% of 1

A 2D space survival sandbox set 200 years after a rogue AI shattered the solar system. Play as an astronaut or the rogue AI itself, fight AIs, humans, and alien life, and survive the void: mine resources, build factories, and keep your ships and stations, and crew alive.

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$
Released
Price
$ Β· Cheap
Players
πŸ‘₯ Up to 4 players

Two balls of wool, one thread, one big adventure! Jump, swing and puzzle your way together through more than 50 interwoven levels β€” in co-op or multiplayer.

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$
Released
Price
$ Β· Cheap
Players
πŸ‘₯ Not stated
Reviews
100% of 2

Critter Climb is an online 2D platformer where you and your friends climb through unique biomes with dangerous hazards. There’s only one way to go... UP! Give your friends a little kick on the adventure.

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$$
Released
Price
$$ Β· Standard
Players
πŸ‘₯ Not stated
Reviews
85% of 162

The evil goddess seeks to devour and remake the world… and you are what stands in her way. Fight and kill, expand your skill tree, craft and build, and lead the world’s people to victory in Din’s Champion, a multiplayer fantasy action-RPG where every choice matters, and the choices are endless.

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$
Released
Price
$ Β· Cheap
Players
πŸ‘₯ 2–8 players
Reviews
95% of 23

Escape a dangerous dungeon with your friends as royal babies. Solve puzzles, dodge traps and laugh through chaotic co-op action for 2–8 players!

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Free
Released
Price
Free
Players
πŸ‘₯ Not stated
Reviews
59% of 1,911

Soul's Remnant is a 2D platformer MMORPG focused on social gameplay and exploration! Customize your character, and conquer dungeons and bosses in this mysterious world. Play with friends or make new ones - just watch out when night falls!

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