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 31–40 of 101 games matching Side Scroller · updated 12 Oct 2026

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Free
Released
Price
Free
Players
👥 Up to 2 players
Reviews
70% of 10

A free-to-play 90s-style bullet-hell shooter with high-res graphics, unlocked 60+ FPS, single-player campaign, and online co-op multiplayer!

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
👥 Up to 3 players
Reviews
100% of 1

A wacky 3-player co-op platformer where clumsy dinosaurs try to escape a city full of traps and surprises. Everything’s trying to kill you — and that’s a good thing!

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$$
Released
Price
$$ · Standard
Players
👥 Up to 3 players
Reviews
69% of 1,058

Towerborne is an exciting side-scrolling Action RPG Brawler. As an immortal warrior journey across a crumbling world, uncover the mystery of the fallen City of Numbers, and push back the corruption threatening humanity’s survival.

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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! 🛡️🎙️

If you loved these, you'll love this

$
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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$$
Released
Price
$$ · Standard
Players
👥 Not stated
Reviews
88% of 2,332

A cosmic battle awaits! Choose between 15 Marvel Super Heroes in this frenetic action beat ‘em up to fight against the deadly Annihilation Wave threatening the galaxy. From New York City to the depths of the Negative Zone, the future of the Marvel Universe will be fought for across the stars!

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$
Released
Price
$ · Cheap
Players
👥 Up to 2 players
Reviews
86% of 22

You are a brave sheep who was sent to space by the USSR to test a new spaceship, but it veered off course and crashed on an alien planet! You must travel across strange worlds and fend off enemies to make it back to Earth safely.

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$
Released
Price
$ · Cheap
Players
👥 Not stated
Reviews
100% of 1

Let's embark on an exciting jumping adventure! In each level, you'll need to jump nimbly over various obstacles, skillfully dodge blocking monsters, and collect sweet fruits along the way. Once you successfully complete each level, you'll unlock more exciting challenges!

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Free
Released
Price
Free
Players
👥 Not stated
Reviews
100% of 4

「NIGHTRAVEL」は、荒廃した電子街が舞台のマルチビルド2Dアクションゲームです。電脳支配された故郷を救うため「ハッカー」となり、反撃の狼煙を上げよう。 荒廃した空虚な街を駆け抜け、有象無象の敵対者たちを蹂躙しよう。一人でも友達と一緒でもプレイ可能。 戦利品を組み合わせて能力増強、各キャラクターを使いこなし、電脳システムに支配された街を取り戻そう。

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