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 81–90 of 238 games matching 2D Platformer · updated 12 Oct 2026

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$
Released
Price
$ · Cheap
Players
👥 2–8 players
Reviews
100% of 4

Insert Coin: Arcade Party is a chaotic online multiplayer party game packed with 30+ fast-paced arcade minigames. Face friends in rapid rounds of reflex, timing, and word battles. Insert coin. Let the chaos begin.

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Free
Released
Price
Free
Players
👥 Not stated
Reviews
40% of 10

A multiplayer online hack-and-slash game set in a chaotic world. Fight on the battlefield, feel every hit, and battle with friends. Easy controls with auto combat and auto loot for casual play, plus manual skills and movement for players who want real action.

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$
Released
Price
$ · Cheap
Players
👥 Up to 4 players
Reviews
100% of 3

Fight. Loot. Die. Repeat. Begin your plight into this 2D rogue-lite, and try to survive. Battle enemies, bosses, charge orbs, enter portals, and try to make it farther than last time, uncovering new items, challenges, and secrets. Adventure alone or with up to 3 other friends in co-op.

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Free
Released
Price
Free
Players
👥 Not stated
Reviews
44% of 9

A SLG strategy game with the historical background of the Three Kingdoms! Players develop their own technology, build fortified buildings, and recruit more soldiers to enhance their overall strength Players conquer cities, make achievements, and ultimately unify the world!

If you loved these, you'll love this

Free
Released
Price
Free
Players
👥 Not stated
Reviews
51% of 27

Reunion Online is an open-world MMORPG with full cross-platform play. Fight monsters, team up with players, earn random loot, and grow your character through crafting and enchanting.

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Free
Released
Price
Free
Players
👥 Not stated
Reviews
43% of 383

The return of classic 2D side-scrolling action! WonderKing is a free-to-play MMORPG packed with flashy combat and deep progression. Advance through diverse classes, master unique combos, and party up with friends for epic boss raids. Start your adventure today!

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$
Released
Price
$ · Cheap
Players
👥 2–6 players
Reviews
25% of 181

Croak Squad is a 2–6 player online co-op game (best with 4–6 players) where colorful frogs use their tongues to swallow teammates and spit them in arcs to clear trap-filled stages. Sounds easy? Later levels demand perfect timing and angles—sometimes even yeeting friends straight to the goal!

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$
Released
Price
$ · Cheap
Players
👥 Up to 2 players
Reviews
90% of 10

Golfing, but up a bizarre mountain where every 'I got it!' is a lie. A chaotic co-op physics platformer where falling is half the fun... probably.

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Free
Released
Price
Free
Players
👥 Not stated
Reviews
90% of 11

Blocky Ball OT! The long awaited sequel to Blocky Ball is here! Take your game to new heights as you compete against other players in 1v1 and 2v2 matches. Additionally, there are several mini-games to refine your skills! Dunk on your opponents and become the blocky baller you were born to be!

If you loved these, you'll love this