Co-op & Multiplayer Games

Start from a tiny camp and build a sprawling subterranean world together.

Build a thriving farm together with up to 8 players on PC in the 1.6 update.

FIREWORKS MANIA is a small casual explosive simulator game where you play around with fireworks, create beautiful firework shows or just blow stuff up.

Build and run your own waterpark solo or with friends. Design slides, send guests flying with ragdoll physics, manage staff, and fully customize your park. Turn total madness into a diamond five-star empire in this first-person management simulator!

Welcome to Feign, an intriguing role-based game that blends mystery, strategy, and deception. Step into a quirky, small town where Innocents, Impostors, and Neutrals navigate suspenseful gameplay. Your mission unfolds under the cover of night - then it's up to the village by day to vote someone out!

El Presidente is back! Prove yourself once again as a feared dictator or peace-loving statesman on the island state of Tropico and shape the fate of your very own banana republic through four distinctive eras.

Unleash your inner miner as you commandeer a high-tech Mining Mech! Mine for valuable resources and upgrade your mech for even bigger hauls as you explore the underground. Fun to play alone or with up to 7 friends in online co-op multiplayer!

The world of Elysia needs YOU! Join this cooperative, 3D sandbox action RPG to level up your character, craft epic weapons, conquer enemies in real-time, and build almost anything! Craft your adventure. Forge your hero. Become the ultimate Portal Knight!

Get ready to explore, farm, fish, mine, craft, and raise magical Lumas as you solve puzzles and embark on quests across Luma Island. Play solo, or team up with friends in 1-4 player online co-op. Choose relaxing Cozy, challenging Adventure, or epic Hero mode to match your mood and playstyle.

Grow your own farm all by yourself, or cooperate with your friends in this unique, relaxing farming experience!

Unleash the apex worm in you! Join a world where you eat to grow and aim to become the largest worm around. Dodge viruses, cut off enemy paths, and indulge in addictive multiplayer action. Custom skins, game modes, and more await!

Construct and design buildings for optimal working conditions. Hire people to design and release software, so you can defeat the simulated competition and take over their businesses. Manage and educate your employees to make sure they are skilled and satisfied with their job.

With BADLAND: Game of the Year Edition, experience the multi-award-winning action adventure like never before - redesigned for Steam.

Wage war across entire solar systems with massive armies at your command. Annihilate enemy forces with world-shattering TITAN-class units, and demolish planets with massive super weapons!

A toxic waste spill finds its way into the water supply, causing the recently deceased to rise from their graves. Now it's up to you to blast your way through the hordes of undead if you're going to escape the city. On the way to your rescue, you'll search stores and houses for supplies, and trade with other survivors.

S.O.N.A.R. (Submarine Operators Not Actually Ready) is a 1–6 player co-op submarine sim where teamwork is essential, panic is inevitable, and sinking is always one wrong button away. Use sonar, pilot, fight, repair, and pray your friends know what to do.

Build your own Super Mining Mech and explore the underground in search of new natural resources. Customize your mech with unlockable parts to dig deeper than ever - by yourself or with up to 7 friends in online co-op multiplayer! So, what are you waiting for? There’s mining to be done!

EARLY ACCESS - Play solo or in co-op with up to 6 players, with PC-PS5 cross-play. Build and grow your supermarket, stock shelves, manage inventory, deliveries and staff. Customize your store and turn your small grocery shop into a thriving supermarket.

Experience a relaxing open-world farming game where your mech does the heavy lifting. Build your ideal farm and automate the upkeep. Tune your mech to clear entire forests and plow vast fields, or kick back and watch the sunset with up to three friends.

A sandbox adventure game as big as your imagination.

The charming and relaxing stone-age farming sim where you live in a thriving community exploring the wonderful world of Pacha. Discover "ideas," domesticate crops, befriend animals, and help your village grow. Play co-op with friends or explore the early days of civilization in single-player.

West Hunt is a 1-8 player social deduction game set in the Old West! Among the hardworking townsfolk hides an Outlaw or two causing mischief and mayhem across town. Luckily, there are eagle-eyed Sheriffs ready to sniff them out! No matter what role you play, you're sure to have a hog-killin' time!

You have inherited your grandparents farm as they set off to travel the world. Work with Frank at the local construction shop to finish off the final touches on your new home. Aid Frank and Mayor Wilson in building up the town so it may reach it's full potential.

CONTROL FANTASY RACES, SET OFF TO CONQUER NEW LANDS, OVERTHROW YOUR ENEMIES AND CLAIM THE VICTORY! In this digital adaptation of the legendary board game, dive into a world inhabited by whimsical fantasy races.

A space game about swinging trash into things and dying.

The chaotic co-op railroad construction game is back! Team up with your friends to build a railroad through procedurally generated worlds with new biomes and bosses. Permanently upgrade your character and engine, even create your own levels - just don‘t let your train derail!

A fun hidden role game where you backstab your co-workers and get mad at your co-workers for backstabbing you. (6-10 players)

First Class Trouble is a party game where players must work together and against each other to survive a disaster. The goal is to shut down a deadly A.I. Some players are impostors, secretly playing as human-looking killer robots intent on betraying the other players.

Control a tiny ball of grey goo with the ability to eat anything smaller than itself. The more it eats, the bigger it gets! Eat rats, dinosaurs, gladiators, samurai, pyramids, volcanoes... Everything! Soon you'll be eating the entire planet.

One hunter & up to 9 friends disguised as deer. A game of hide-and-seek where every move could be your last. Will you blend in with the herd or stand out? Oh Deer...

The most detailed cottage experience. Live as a regular Finnish man and enjoy the summer. Play relaxed: go to the sauna, get drunk and grill food. Play how you want: make moonshine, become a burglar and turbocharge your moped.

Co-op survival and crafting sandbox where friends divide roles between base building, gathering, and boss expeditions across multi-hour sessions.

In Construction Simulator 2015, you take the controls of 16 realistic construction machines made by LIEBHERR, STILL and MAN with high-quality 3D graphics.

A living world full of surprises, secrets and danger awaits in The Survivalists, an adventure-filled survival sandbox set in The Escapists universe. Explore, build, craft and even train monkeys with up to three friends in a desperate bid to survive. Have you got what it takes to be a Survivalist?

Enjoy some of the best loved Flash games of the past in this awesome time capsule of over 60 Ninja Kiwi classics. Experience a piece of history and play the original Flash games that spawned the worldwide phenomenon of Bloons TD.

Rediscover the simple life. Farm, fish, forge and fight to restore the peace in an all-new farming adventure. Features split-screen coop, a helpful pet, automated drones, resourceful pixies, a card-eating progression system, and dangerous dungeons to delve into!