Co-op & Multiplayer Games

Carry fragile valuables together while hiding from monsters in 1–6 player physics co-op.

You climb the mountain, but you keep the moments. A 1–4 player co-op climbing adventure.

Coordinate between ship monitor duty and facility scavengers in 4-player proximity-voice horror.

Further and deeper together. Even mining rock is all about the crew.

Chaotically busy, yet weirdly addictive with friends.

Shoot chaotic horror clips with friends and laugh over the actual video file together.

Squad-based action co-op featuring distinct loadout synergies and mission-based combat built for 1–2 hour squad sessions.

Wingspan is a relaxing, award-winning strategy card game about birds for 1 to 5 players. Each bird you play extends a chain of powerful combinations in one of your three habitats. Your goal is to discover and attract the best birds to your network of wildlife preserves.

Barony is the premier first-person roguelike with cooperative play! Adventure alone, or gather a party with iconic and unusual RPG classes to face off against the brutal dungeons. Test your resourcefulness, wits, and friendships, on your quest to lift the evil lich's curse!

Pilgor's baaack! Gather your herd and venture forth into Goat Simulator 3; an all-new (at least on Steam), totally realistic, sandbox farmyard experience. Invite up to three friends in local or online co-op, create carnage as a team, or compete in mini-games and then not be friends anymore.

Control a car full of jerks as they explore cities, recruit weird people, rescue dogs, argue with each other, and face gigantic swarms of slow zombies. Randomly generated for a new story and rare events every time you play!

Create a hero from one of four classes to save Etheria in this 4-player coop Tower Defense Action-RPG. Includes Steam exclusive Portal gun & TF2 familiars!

The best-selling Trine series returns to the magic of 2.5D! Join three iconic heroes as they set off on a quest through fantastical fairytale landscapes to save the world from the Nightmare Prince's shadows.

Ember Knights is an action rogue-lite for 1-4 players where you play as legendary knights, the last spark of hope against the mad sorcerer Praxis and his hordes of unwavering fiends. Wield weapons & skills, build synergies with game-changing relics and free the universe of Praxis’ corruption.

Hypercharge is a first and third-person shooter action figure game you've always dreamed of! Grab your friends, complete objectives, defend the Hypercore against waves of weaponized toys, and defeat Major Evil together in the story campaign!

Heroes of Hammerwatch is a rogue-lite action-adventure. Explore and battle your way through procedurally generated levels on your own or with up to 3 friends.

A co-op horror game like no other... Play with 1-8 players online as you solve puzzles, collect items and run from the horrors that lie within. Follow in the footsteps of Joan in the story mode or tackle procedurally generated maps that scale with your level and bring a fresh experience each game..

Survivors-like with ONLINE CO-OP for 1-4 players. Team up with your wizard friends to slay hordes of dark creatures. Complete team-based objectives, unlock new upgrades and create overpowered spell synergies. Friend nor foe is safe in this friendly fire bullet hell!

You have 3 weeks to get a date for Monster Prom! Go through absurd and funny situations, raise your stats and seduce one of your classmates. Beautiful art, bold, unapologetic dialogue and hard choices make up this Multiplayer (1-4 players) Dating Sim. Be your worst self.

Roboquest is a fast FPS Roguelite in a scorched futureworld. You're a rebooted Guardian, ready to kick some metal ass! Fight with your buddy or by yourself and annihilate hordes of deadly bots in ever-changing environments.

Stand and fight for humanity. This arcade shooter takes place in the year 2022, as the Earth Defense Force fends off an all-out attack by unknown life forms. Become an EDF soldier, battle against endless hordes of immense enemies, and restore peace to the earth.

It's a fight for the future of the planet between the Ravagers, a merciless swarm of alien invaders, and the Earth Defense Force (EDF) in this third-person shooter.Play as four different classes in over 80 missions with a range of 800 weapons at your disposal.Co-op play supported.

Wrangle the hands and arms of a 1970s space cosmonaut and push, pull and twist your way through an increasingly precarious range of physically simulated stellar scenarios, where without gravity, nothing is still, nothing is secure, and nothing is simple.

Slice, burn, toss, zap, grind and gib massive hordes of repugnant orcs in this long-awaited successor to the award-winning Orcs Must Die! series.

Unique fusion of a top-down shooter and tower defense strategy. You are the invader! Use destructive weapons or lead your enemies into a maze of towers. Strategize in the build mode by carefully selecting various types of alien towers or throw yourself right into the heat of the battle.

Hello Neighbor Multiplayer. Secret Neighbor is a Multiplayer Social Horror Game where a group of intruders try to rescue their friend from the Neighbor's creepy basement. Only problem is one of the intruders is the Neighbor in disguise.

Serious Sam II is a shot of adrenaline to the hearts of first-person shooter fans across the world. This is serious!

Shotgun Farmers is the multplayer shooter where missed shots grow guns. Fire your bullets into the ground to plant your ammo. The longer a gun plant grows the more ammo you will get!

SYNTHETIK is an unforgiving tactical shooter rogue-lite where freedom and experimentation is key. Fight in a world overrun by the Machine Legion and their Gods. Experience the next level in gun-play and dive into unparalleled build options and Android upgrades. Can you defeat the Heart of Armageddon?

It takes two to save the world in this cooperative spy adventure. Pair up with a friend as Agent or Hacker—with only your voices to connect you—and work together to bring a hi-tech global menace to its knees. Now with a FREE CONTENT UPDATE!

《Your Mother》is a computer desktop companion. Experience the love and kindness from mothers.

Serious Sam HD: The First Encounter is a visually upgraded and fully Steam supported remake version of the original high-adrenaline single-play and 16-player co-operative arcade-action FPS which was Gamespot's Game of the Year 2001 and which scored overall of 87% on Metacritic!

Co-op horror game where you play in teams of 1 to 8 reckless journalists, ready to explore a city overrun by deadly creatures to snap spectacular footage. Your only goal: make the headlines without becoming one.

An online co-op detective horror for up to 3 players. Work together across randomly generated shifts to investigate your customers, as some are only pretending to be human. Make one mistake, and you’ll be forced to board up, set traps, and hide.

Serious Sam Fusion is a central hub for several existing Serious Sam games developed by Croteam. Cool new features, engine upgrades, patches and updates will be released to existing owners for FREE!

Caveblazers is a challenging and brutal roguelike platformer. Journey into a mysterious cave, fighting orcs and goblins with an abundance of weapons and magical items! Make friends along the way, then watch in despair as they are crushed in to a bloody pulp under a troll's fist.