1,797 Indie · Online co-op games your group can play together online, including Monaco: What's Yours Is Mine, ORION: Prelude, and Revolution Ace.
All games: 24
Case guarded buildings, grab the valuables, and escape together in Monaco: What's Yours Is Mine, a top-down heist game for up to four players online or on one screen.
Defend generators, buy upgrades between waves, and bring up to four friends into the original five-player co-op modes of ORION: Prelude.
A deep, tactical shoot'em up. With every takedown, you’ll earn cash and xp to upgrade your ship and unlock new abilities. Online and local co-op. Unique versus mode. Realistic physics and water simulation.
Multiplayer is designed for up to ten players, with online and LAN co-op or PvP modes; build empires together against AI rivals and choose from six factions and several match endings.
Defend magical rifts with a friend in a two-player action tower defense game built around traps, weapons, and fast-moving orc waves.
Join up to two friends for a 3v3 platforming MOBA, push through droid lanes, and break the rival team’s base in Awesomenauts.
Join friends in Realm of the Mad God Exalt for crowded online boss fights, branching dungeons, 19 classes, and permanent character loss when a hero falls.
Take on a colorful, weapon-packed FPS campaign with friends online or over LAN, then swap monster waves for versus play.
Build defenses with up to three friends, then fight beside them as monsters swarm the crystal. Dungeon Defenders mixes tower strategy, action combat, and a long trail of character and gear upgrades.
Mine, build, and take on a changing world with your friends in Terraria. A desktop server starts with 16 online player slots; explore for better gear, then bring it into boss fights and invasions together.
Blast through Serious Sam 3: BFE’s campaign with up to 16 online players or four people in local split-screen, against waves of monsters in Egypt.
The New Fatal Error DLC includes a new 5-mission Operation and touch-screen controls.
Take on a cryptic cyberpunk campaign with up to three friends, mixing firefights, hacking, psychic powers, and character builds.
Take one of eight heroes into Demigod’s team arenas, play custom matches with friends against bots, or compete for control of the battlefield.
Team up as demon hunters, clear four escalating waves, and fight through grim arenas in The Haunted: Hells Reach.
Clear an arcade FPS campaign with up to 16 online players, or use Fusion 2017 for local split-screen with up to four on one display.
Fly custom cooperative maps with friends on the community-run Alti+ Coop server, or take Altitude’s standard modes into competitive aerial matches.
Up to three friends can play online or on one shared screen, combining a wizard's conjured objects, a thief's grappling hook and a knight's strength across 15 fairytale levels.
Join up to seven friends in a long strategy campaign against two AI empires. Expansion helps your resistance, but destroying key enemy infrastructure can draw more attention.
Team up as survivors, scavenge weapons, and barricade rooms while player-controlled zombies close in. Zombie Panic! Source is online PvP with cooperative play inside each team.
Garry's Mod has no built-in co-op campaign, but its online Sandbox gives you and your friends physics tools, props, and a huge community workshop to turn an empty map into your own project.
Command one of six world regions as radar, fleets, bombers, and nuclear silos turn DEFCON's tense alliance game into a contest to lose the least.
Fight your friends as puppies, kittens and other fuzzy creatures in PARTY ANIMALS! Paw it out with your friends remotely, or huddle together for chaotic fun on the same screen. Interact with the world under our realistic physics engine. Did I mention PUPPIES?
Dinkum is a survival life simulation game set on an island inspired by the rugged Australian outback. Farm, hunt, mine, fish, and forage to gather resources, expand your town, and discover what makes Dinkum so special—either solo or with friends.