Online co-op 2D Platformer games

Every online co-op 2D Platformer game on Steam we know of, newest first. Add tags or a price band to narrow it down.

Showing 71–80 of 238 games matching 2D Platformer · updated 12 Oct 2026

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$
Released
Price
$ · Cheap
Players
👥 1–4 players
Reviews
100% of 3

Catverse is a 2D platform climbing game where 1-4 players become a cat's brain cells and control it together. The combination of lights in the rooms of its mind IS its action! Sync up with friends to climb to the Cosmos at the top, or run solo and take on this week's Ranked leaderboard.

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$
Released
Price
$ · Cheap
Players
👥 Not stated
Reviews
100% of 3

A fast-paced 2D tactical sniper shooter with retro arcade style. 52 missions across 16 campaigns Desert warfare - cyber cities to zombie graveyards & dark carnivals. Unlock devastating weapons, fight helicopters, jets, sharks, and killer clowns. Spare the civilians or pay the price. CO-OP inc

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Free
Released
Price
Free
Players
👥 Up to 2 players
Reviews
36% of 179

The MapleStory you missed is calling you. MapleStory M is an MMORPG full of MapleStory's signature charm and worldview. Enjoy jobs bursting with personality, lighthearted battles, an easy leveling-up system, and even co-op gameplay. Begin your own adventure in this adorable 2D side-scrolling world.

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$
Released
Price
$ · Cheap
Players
👥 Up to 4 players
Reviews
100% of 12

HeadHunters is a chaotic couch/online party game where you don’t pick a character… you are the head. Attach to different bodies to gain new weapons and abilities, and adapt on the fly. Improvise. Adapt. Overcome. Up to 4 players. Fully cross-platform. Don’t lose your head.

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Free
Released
Price
Free
Players
👥 Up to 64 players
Reviews
93% of 15

Shoot and slash your way through Enemies and Levels while upgrading, in Endless Mode and the Campaign in this fast-paced Hack 'n' Slash. You can even face these challenging levels while playing up to 64 players online!

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$
Released
Price
$ · Cheap
Players
👥 Not stated
Reviews
100% of 11

“Hero Hospital” is a classic hospital management game: send in undercover agents and fake patient brokers, unleash dogs to cause crashes and chaos, dump trash and throw bombs, and even head into outbreak zones to fight viruses. The gameplay can be expanded endlessly.

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Free
Released
Price
Free
Players
👥 Not stated
Reviews
40% of 956

Set forth on a grand journey across boundless skies in this landmark RPG, featuring fully voiced characters brought to life by the iconic artistry of Hideo Minaba and music scored by legendary composer Nobuo Uematsu.

Free
Released
Price
Free
Players
👥 Up to 2 players
Reviews
100% of 4

A 2-player co-op survival action game. Automatically attack waves of enemies, collect EXP to level up, and survive for 3 minutes to face the final boss. Revive your fallen ally by staying close!

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Free
Released
Price
Free
Players
👥 Up to 2 players
Reviews
94% of 90

Sujefa is co-op puzzle platformer where two players can play as Rock, Paper or Scissors. Work together to solve puzzles and reach the end. Play online or locally on a shared screen.

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$
Released
Price
$ · Cheap
Players
👥 Not stated
Reviews
100% of 10

Your desktop is now a battleground! ⚔️ Desktop Warriors is a low-spec, 2D social overlay game where tiny warriors live on your taskbar. Gear up with PvE gold, challenge friends to PvP, and hang out in 10-player lobbies—all while you work or browse! No GPU? No problem! 🛡️🎙️

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