Co-op indie games

Amidst The Evil

ViktorNR

Amidst The Evil is a co-op horror game where you complete a ritual and solve puzzles to fight back against an ancient darkness that has risen once more.

HIROYU's Murder Mystery：マーダーミステリー セッションツール

ひろゆ～

Murder Mystery games created by HIROYU through the two production circles, “TriEmoStab” and “IBAHIRO”, are now available to play on Steam. ※This is a dedicated tool for playing Murder Mystery games online.

Birdseed

Buffalo Buffalo

Snap pics of the chunkiest, cutest birds in VR! Relax in lush forests, complete quirky daily quests, and fill your Journal. Whether you’re birding alone or together with friends, get cozy and escape to nature.

Invokyr

Ludogram

7 titles on Steam

A co-op survival horror game about a cursed board game. Play in a group of 6 players. Roll the dice, survive the horrors that are summoned, and beat the Gamemaster to win your freedom.

Espace

RobotariaStudios

Uncompromising space colony management. Survive the crushing vacuum, manage oxygen, and build a self-sustaining station in the deep void. Every decision is a matter of life and death. Will your crew thrive, or will Espace become their silent tomb?

Monkey

Two Armed Baboons, LLC.

Welcome to monkey, play different gamemodes, explore different maps and make sure to have fun!

Afterbeat (Project Arrhythmia)

Vitamin Games

A musical bullet-hell where all things beautiful are deadly. Dodge well little nanobot, you don't have much time.

Xenmega

iMWCode Gaming

A retro arcade space shooter where you blast alien fleets, dodge bomb swarms, collect power-ups, and fight solo or in local co-op to liberate occupied planets from the mind-controlling energy force code-named Xenmega.

Deck Delve

ppodd

Deck Delve is a twin-stick roguelike deckbuilder where your abilities are cards played in real-time. Make split-second combat decisions and master the flow of your deck to survive!

Horde Arena

FiveFiveSix Games

Horde Arena is a third-person shooter roguelite where you survive endless enemy waves. Pick a character, upgrade your stats and weapons, and evolve to dominate the battlefield. Play solo or team up with up to four players in co-op mode.

TIDEBREAK

Dustin Klaas, TheBigBois

Wake up on an island the sea swallows a little more every night. Punch trees, craft, build a camp, fish, and hold out against what crawls out of the water. Three bosses, a Beacon, one way home. Solo or with two friends.

Tower of Fangs: Summoned to Another World, I Was Locked in a Tower with 299 Strikers, Only the Last Egoist Goes Home

ISEKAI Games

14 titles on Steam

He passed the ball in the final. The goal swallowed him whole. Now Hino Kakeru is trapped in an isekai tower with 299 strikers, and only the last egoist goes home. Devour rivals' Fangs, fuse super moves, unleash duo combos and climb 24 floors of anime football action with 4 endings and local 2P.

HB Evolution

HB Evolution

A free-to-play MMORPG where two rival nations wage open-world war. Build a class-free hero, master magic, push your gear up a deep +N upgrade path, and fight for your town in massive PvP, on a modern engine and in HD.

Hot Meals Fast Wheels - Prologue

Misket Games

A co-op cooking game where small mistakes quickly turn into chaos. Go shopping, cook in your food truck, and drive through the city to deliver orders on time.

The Crimson Hunt

Farelas

You play as Victoria, a vampire hunter haunted by her past, and Eleanor, a young woman trapped in a nightmare that has only just begun. Together, they must endure grotesque creatures, hidden traps, and a presence that seems to know them better than they realize.

Tower Craft

EZY Studios

A voxel tower defense where every defender is a little soldier, not a turret. March through a 20-map campaign, rank eight defenders from militia to legends, and hold every road to the Queen — alone or in endless co-op. Battle your friends in an army style match.

Prison Break: Thirty Walls

Zitherian Studios

Being seen somewhere you shouldn't be is the beginning of the problem. Thirty procedurally built prisons, each with one way out. Learn the routine, find the shovel, dig — and when the shovel isn't enough, find another way through the wall.

Ping Ball!

PLLVGS

Fast paced, paddle action with soccer/football style goals, tilting paddles, and power ups that turn every rally into chaos. Play 1v1 or 2v2 online, locally on one PC, or against CPU opponents.

Sinever: First Seal

MAS Studios

Sinever: The First Seal is a 1–4 player co-op psychological horror game. Explore an isolated Victorian estate, operate paranormal equipment, manage your sanity, and uncover the truth behind its imprisoned entity before the house claims you too.

Veillombre

Valakey

Multiplayer pixel-art horror for 1-16 players. A manor drowned in darkness, a candle as your only ally, a monster on the prowl — and maybe traitors among you. Scavenge, barricade, hide, vote… and survive the night.

Chill Cat

OFFMOON Inc.

Chill Cat is a cute and chaotic 3v3 multiplayer top-down shooter where adorable cats battle for turf with colorful paint blasters!

Categories

Jonas Hörner

Think fast or get sabotaged! Categories is a chaotic party game for up to 12 players. Use game-changing power-ups to ruin your friends, crush rivals in mini-games, and create your own custom categories. Fast, unpredictable, and endlessly replayable—can you handle the chaos?

Jono

Part Time Monkey

Work together to complete one million levels, one player at a time. Continue where the previous left off. Chat with others while you wait for your turn. How long will it take?

Corpse Sea Defense

异变方格

A top-down arcade zombie shooter. Unlock and upgrade weapons through combos, and defend your personal space with firepower in hand. Play solo or local split-screen co-op across multiple battlefields against endless hordes.