Best online co-op games for 8+ players

Online co-op games on Steam with room for 8+ players, going by the player count on each game's store page. Games that don't say how many can play aren't included.

Showing 551–560 of 917 games matching 8+ players, best rated first · updated 14 Oct 2026

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Clean Up Earth

Deck PlayableCrossplay
$$
Released
Price
$$ · Standard
Players
👥 Up to 25 players
Reviews
61% of 115

A relaxing co-op restoration game where you vacuum waste, rebuild ecosystems, and watch nature return in real time. Play solo, with friends, or in online multiplayer sessions with up to 25 players. Community gameplay can help support real environmental initiatives with no extra spending required.

If you loved these, you'll love this

−50%
$
Released
Price
$ · Cheap · On sale −50% until 19 Oct
Players
👥 Up to 8 players
Reviews
78% of 14

Can you make it to the top of the Tower of Friendship? Run, jump, climb, fall, and then do it all again. Play by yourself or with your friends. Be nice and lay down to make jumps easier for others, or push each other off when the falls are the highest. But whatever you do, never stop squeebing.

If you loved these, you'll love this

Diamond Hands: To The Moon

Deck PlayableCrossplay
$
Released
Price
$ · Cheap
Players
👥 Up to 10 players
Reviews
78% of 14

A game with one objective - to get to the moon. A game for apes by apes. A game as frustrating as stock market manipulation, a game that will make you want to hold on for dear life...

If you loved these, you'll love this

Mech Anarchy

Crossplay
$
Released
Price
$ · Cheap
Players
👥 1–10 players
Reviews
81% of 11

Mech Anarchy is an action packed, fast-paced top down shooter created by intense gamers, for intense gamers. Arcade style shooting with near limitless customization makes no two battles alike.

Steam Tags:

Atre: Dominance Wars

Deck PlayableCrossplay
$$
Released
Price
$$ · Standard
Players
👥 Up to 32 players
Reviews
68% of 35

A fantasy strategy with turn-based tactical combat where your goal is to become a God. Build your empire, forge alliances, ascend to godhood, then watch every ally turn on you the moment you're about to win.

If you loved these, you'll love this

UNDECEMBER: The Farside

Deck PlayableCrossplay
Free
Released
Price
Free
Players
👥 Up to 8 players
Reviews
52% of 20,739

UNDECEMBER is a Hack & Slash Action RPG in which players are able to surpass the conventional limits of skills by endlessly combining variety of Skill and Link Runes. Become a Rune Hunter and experience the joy of farming and growth!

If you loved these, you'll love this

The Stickman

Deck Playable
$$
Released
Price
$$ · Standard
Players
👥 Up to 12 players
Reviews
100% of 4

The Stickman is a movement-based FPS inspired by Titanfall 2 and Trackmania! Shatter PvE leaderboard records, battle friends in PvP, or create custom stages with the built-in Level Editor!

If you loved these, you'll love this

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

Tower defense on rails. Wake the last war-train in a steampunk world that needs you: build your armored consist car by car, bristle it with turrets, and harvest fuel on the move as you hold the line across a vibrant frontier. Capture towns, upgrade your train, and follow a lone survivor onward.