Embark on the craziest journey of your life in It Takes Two. Invite a friend to join for free with Friend’s Pass and work together across a huge variety of gleefully disruptive gameplay challenges. Winner of GAME OF THE YEAR at the Game Awards 2021.

The Past Within is the new co-op experience from Rusty Lake! Play together with someone you deem trustworthy: one in The Past, the other in The Future. Observe and communicate what you see around you. Solve the puzzles and uncover Albert Vanderboom’s plan.

Smash demons and deflect bullets in a hardcore arcade clicker with the RPG elements.

Welcome to a new world! In Monster Hunter: World, the latest installment in the series, you can enjoy the ultimate hunting experience, using everything at your disposal to hunt monsters in a new world teeming with surprises and excitement.

Set in the zombie apocalypse, Left 4 Dead 2 (L4D2) is the highly anticipated sequel to the award-winning Left 4 Dead, the #1 co-op game of 2008. This co-operative action horror FPS takes you and your friends through the cities, swamps and cemeteries of the Deep South, from Savannah to New Orleans across five expansive campaigns.

Monaco: What's Yours Is Mine is a single player or co-op heist game. Assemble a crack team of thieves, case the joint, and pull off the perfect heist.

A co-op adventure about driving your Recreational Vehicle home.

PAYDAY 2 is an action-packed, four-player co-op shooter that once again lets gamers don the masks of the original PAYDAY crew - Dallas, Hoxton, Wolf and Chains - as they descend on Washington DC for an epic crime spree.

ibb & obb is a two player cooperative game set in a puzzle filled world where gravity goes both up and down. You can only succeed by working closely together. Find a friend for some true local co-op couch fun or match up online.

Raft™ throws you and your friends into an epic oceanic adventure! Alone or together, players battle to survive a perilous voyage across a vast sea! Gather debris, scavenge reefs and build your own floating home, but be wary of the man-eating sharks!

A Way Out is an exclusively co-op adventure where you play the role of one of two prisoners making their daring escape from prison.

When you cut ties to the past, new bonds form. Build relationships with other Yarnys in local co-op or as a single player, fostering friendship and support as you journey together.

Embrace mind-blowing moments as you’re pulled deep into the many worlds of Split Fiction, a boundary-pushing co-op adventure.

From small-time dope pusher to kingpin - manufacture and distribute a range of drugs throughout the grungy city of Hyland Point. Expand your empire with properties, businesses, employees and more.

Red Barrels invites you to experience mind-numbing terror, this time with friends. Whether you go through the trials alone or in teams, if you survive long enough and complete the therapy, Murkoff will happily let you leave… but will you be the same?

Find yourself trapped alone in a room with a ticking time bomb. Your friends have the manual to defuse it, but they can't see the bomb, so you're going to have to talk it out – fast!

6-player co-op survival horror at its finest! Free updates, free special events and a ridiculous amount of fun!

From Valve (the creators of Counter-Strike, Half-Life and more) comes Left 4 Dead, a co-op action horror game for the PC and Xbox 360 that casts up to four players in an epic struggle for survival against swarming zombie hordes and terrifying mutant monsters.

From the depths of hell, climb chained to your friends through diverse worlds. Solo or co-op, try to reach the summit and discover what awaits you there...

First-person puzzler you can play solo or in an online co-op. Explore a set of highly interactive escape rooms. Move furniture, pick up and examine everything, smash pots and break locks! Play thousands of community-made rooms through the level editor.

HELLDIVERS™ is a hardcore, cooperative, twin stick shooter. As part of the elite unit called the HELLDIVERS, players must work together to protect SUPER EARTH and defeat the enemies of mankind in an intense intergalactic war.

Barotrauma is a 2D co-op submarine simulator – in space, with survival horror and RPG elements. Steer your submarine, complete missions, fight monsters, fix leaks, operate machinery, man the guns and craft items, and stay alert: danger in Barotrauma doesn’t announce itself!

Human Fall Flat is a hilarious, light-hearted platformer set in floating dreamscapes that can be played solo or with up to 8 players online. Free new levels keep its vibrant community rewarded.

Cook and serve your dishes, design and decorate your restaurants, and expand your culinary kingdom with new unlocks, abilities and dishes in procedurally-generated locations. Classic cooking action with permanent roguelite progression. Hire your friends - or do it all yourself!

Gunfire Reborn is a level-based adventure game featuring FPS, Roguelite and RPG. Players can control heroes with various abilities to experience diverse Build gameplay, use various weapons to explore procedurally-generated levels. You can play the game alone, or join 4-player coop.

The world is a vast, beautiful and dangerous place – especially when you have been shrunk to the size of an ant. Can you thrive alongside the hordes of giant insects, fighting to survive the perils of the backyard?

You and your friend are trapped in a mystical world. As time ebbs away you must solve increasingly complex puzzles to escape. Cooperation is key as neither of you have the full picture! Play on two devices, local or remotely, all you need is a voice connection.

This game is a port of the Games for Windows - Live version that was released in 2009. If you buy the Untold Stories Bundle here on Steam, it will be the same as upgrading to Resident Evil 5 Gold Edition.

Escape a chaotic alien planet by fighting through hordes of frenzied monsters – with your friends, or on your own. Combine loot in surprising ways and master each character until you become the havoc you feared upon your first crash landing.

PEAK is a co-op climbing game where the slightest mistake can spell your doom. Either solo or as a group of lost nature scouts, your only hope of rescue from a mysterious island is to scale the mountain at its center. Do you have what it takes to reach the PEAK?

A co-op horror about scavenging at abandoned moons to sell scrap to the Company.

The Ultimate Vault Hunter’s Upgrade lets you get the most out of the Borderlands 2 experience.

Magicka is a satirical action-adventure game set in a rich fantasy world based on Norse mythology. The player assumes the role of a wizard from a sacred order tasked with stopping an evil sorcerer who has thrown the world into turmoil, his foul creations besieging the forces of good.

Phasmophobia is a 4 player online co-op psychological horror. Paranormal activity is on the rise and it’s up to you and your team to use all the ghost-hunting equipment at your disposal in order to gather as much evidence as you can.

Deep Rock Galactic is a 1-4 player co-op FPS featuring dwarven space miners, procedurally-generated destructible environments, and endless hordes of alien monsters. Explore cave systems, mine for minerals, and work together to survive!

Ghost Watchers is a co-op online horror game. You will explore and hunt ghosts in abandoned houses