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 321–330 of 914 games matching 8+ players, best rated first · updated 13 Oct 2026

Filters: 8+ players × Clear all
Filter by tag, price, players or reviews

Railroads Online

Deck Playable
−40%
$$$
Released
Price
$$$ · Expensive · On sale −40% until 22 Oct
Players
👥 Up to 16 players
Reviews
75% of 5,424

Build your dream railroad across a huge open world! You can build tracks and stations, drive detailed locomotives, and transport goods to earn money and experience. Play exciting Online Multiplayer sessions with your friends or create your very own sandbox!

If you loved these, you'll love this

The Last Citadel

Deck Playable
$$
Released
Price
$$ · Standard
Players
👥 Up to 8 players
Reviews
84% of 71

The Last Citadel is a Roguelite, Role-Based, Third-Person shooter. Embark in an expedition to uncover artifacts inside a Citadel suspended above a black hole where many challenges and deadly encounters await. Explore the ever-changing citadel alone, or with a group of up to 8 players.

If you loved these, you'll love this

Ikki Unite

Deck PlayableCrossplay
$$
Released
Price
$$ · Standard
Players
👥 Up to 16 players
Reviews
77% of 676

SUNSOFT relapses... The legendary Bad Game Hall of Famer "Ikki" is back, and this time it's a multiplayer experience! You can't start a riot with just one or two people! Enlist up to 16 friends in this Roguelite madness... Ikki but united!

If you loved these, you'll love this

$
Released
Price
$ · Cheap
Players
👥 Up to 16 players
Reviews
94% of 18

Snack Hunter is a multiplayer hide-and-seek game where players use their smartphones as controllers. Join the Hunters or the Snacks and outsmart your opponents with unique abilities. Whether online or locally, with up to 16 players, the party can start now!

If you loved these, you'll love this

Free
Released
Price
Free
Players
👥 Up to 11 players
Reviews
85% of 57

Zomcats Invasion is a coop online multiplayer game! Play with up to 10 friends and fight endless hordes of Zomcats! Choose between a variety of maps, difficulties and weapons. Unlock abilities and customize your cat to fit your style!

If you loved these, you'll love this

Aeolis Tournament

Deck PlayableCrossplay
$
Released
Price
$ · Cheap
Players
👥 Up to 8 players
Reviews
87% of 41

Use the power of the wind to compete in the various games of the Storm Championship in this charmingly chaotic 8-player action party game. Aeolis Tournament features physics-based gameplay, a tournament mode and local and online multiplayer play.

If you loved these, you'll love this

Free
Released
Price
Free
Players
👥 Up to 10 players
Reviews
77% of 558

J-Jump Arena is a free-to-play, turn-based elimination party game, in which you'll probably blow yourself up - but still have a good time doing it! Think you’ve got the brains to survive the chaos?

If you loved these, you'll love this

Among Us 3D: VR

Crossplay
$
Released
Price
$ · Cheap
Players
👥 4–10 players
Reviews
75% of 2,450

The definitive social deduction party game in virtual reality! Can the Crewmates survive, or will Impostors take over? Roles, Emergency Meetings, deception, sabotages, tasks: enjoy your favorite brand of chaos from the original Among Us with a VR twist.

If you loved these, you'll love this