Simulation · Online co-op games to play together

880 Simulation · Online co-op games your group can play together online, including Rest Area Simulator, Airport Security Sucks!, and Everwind.

All games: 24

Rest Area Simulator

Take over the gas station and convenience store at a roadside rest area and expand by purchasing new businesses. Manage a living world shaped by dynamic economy and random events. Upgrade your facilities, satisfy your customers, and play solo or with friends.

85% positive of 663 reviewsPlaying now: 32$9.99

Airport Security Sucks!

Embody your inner power-tripping TSA agent and hunt down other players attempting to blend in and smuggle contraband past you. Control the crowd and your problematic K9 with authoritative voice commands, and use "compliance devices" to apprehend smugglers making mischief or hiding in plain sight.

84% positive of 496 reviewsPlaying now: 19$7.99

Everwind

Everwind is a novel take on RPG and Sandbox Survival genre in First-Person-Perspective. Embark on the adventure with your friends - Build a base on a flying island-ship, gather resources, craft, loot, and fight while you rise above the clouds to uncover the mysteries of this world!

80% positive of 3,575 reviewsPlaying now: 168$24.99

Party Quiz

Play a local Quiz game with your friends and family. Create your own Quiz using the Party Quiz Constructor or use the Steam Workshop to download one of the Quizzes made by the community. Test your knowledge!

81% positive of 155 reviewsPlaying now: 18$11.99

Roadside Research

Roadside Research is a 1 to 4 player co-op gas station simulator. Except you’re aliens. And undercover. Do very human things like restocking shelves while preparing for the invasion. Just don’t get caught.

85% positive of 4,096 reviewsPlaying now: 87$14.99

Korea. IL-2 Series

Korea. IL-2 Series is a next-generation flight simulator set during the Korean War. Climb into the cockpit of early jet fighters and shape the outcome of legendary aerial battles.

74% positive of 490 reviewsPlaying now: 55$79.99

StarRupture

StarRupture is a first-person open world base-building game with advanced combat and tons of exploration. Play alone or in a group on this sublime and ever-changing planet, extract and manage resources, create your complex industrial system and fight off hordes of alien monsters.

80% positive of 12,566 reviewsPlaying now: 1,145$19.99

VEIN

VEIN is a post-apocalyptic survival multiplayer sandbox game. Gather supplies to survive, explore abandoned buildings, defend your home, and rebuild society, whether alone or with friends.

86% positive of 12,212 reviewsPlaying now: 1,218$19.99

Abiotic Factor

Abiotic Factor is a survival crafting experience for 1-6 players set in the depths of an underground research facility. Caught between paranormal containment failure, a military crusade, and chaos from a dozen realms, the world’s greatest minds must survive against the universe’s biggest threats.

94% positive of 42,834 reviewsPlaying now: 2,527$34.99

NoSlack Pets: Lo-Fi Paws

A warm and cozy desktop cat companion game. Let Miino keep you company while you work or study, focus with Pomodoro, Lo-Fi, to-do lists, and white noise; collect Headgear and decorations, decorate your room, join the Online Study Room, go fishing, and build your own relaxing desktop space.

96% positive of 412 reviewsPlaying now: 181$5.99

Gargadusa's Tower

D&D meets Franchise Manager, Gargadusa’s Tower is a supremely deep guild management simulation that spans generations. Build your adventurer guild from nothing. Recruit heroes, complete quests, and descend the mysterious tower to confront the power that lies within.

90% positive of 330 reviewsPlaying now: 44$8.99

Over The Top: WWI

Join massive multiplayer battles in Over The Top: WWI - an intense shooter set in the gritty backdrop of World War I. Pick your class, choose from a vast arsenal, including rifles, artillery, airplanes, and powerful tanks, and experience the chaos of fully destructible battlefields.

84% positive of 6,814 reviewsPlaying now: 34$19.14

Anomaly Company

You and your crew are sent in to assess reality in this 4-player co-op horror game. Memorize the environment. Spot disturbing anomalies. Decide if the timeline is safe. One bad call—and you’re forced to start over.

75% positive of 198 reviewsPlaying now: 15$5.99

WolfQuest: Anniversary Edition

Live the life of a wild wolf in a realistic ecological simulation set in Yellowstone National Park.

97% positive of 11,669 reviewsPlaying now: 612$29.99

MISERY

MISERY is a 1–10 player co-op survival game set in a nuclear disaster zone. Here, every day is a struggle: search radioactive ruins for resources, build your bunker, craft weapons, and explore a weird, procedurally-generated world with your friends. Beware of anomalies, monsters, and armed bandits.

85% positive of 20,623 reviewsPlaying now: 606$19.99

TV Archive: Tidy Up Together

Shelve the videotapes, unlock new skills, and use your unique methods to tidy up the TV archive. Enjoy the online co-op and online PvP with your friends, or go solo! Fill up the shelves and experience a sense of relief and satisfaction.

70% positive of 677 reviewsPlaying now: 76$4.99

Deskworm

A tiny desktop worm pet that moves when you type, click, or play. Dress it up with hats and skins, park it in a pocket where its gaze follows your mouse, and let its Anti-Shrimp reminders nudge you to sit up and stretch.

92% positive of 154 reviewsPlaying now: 44Free

Stronghold Crusader: Definitive Edition

Gird your loins and sharpen your steel! Besiege 20 unique enemy lords and battle friends online, in this expanded remaster of the classic 'castle sim'. Relive history with new units, opponents, visuals, audio, campaigns, skirmish trails, co-op and larger maps.

92% positive of 10,877 reviewsPlaying now: 2,558$19.99

IdleOn - The Incremental MMO

The incremental idle MMO where your heroes keep fighting while you're gone! Spend their loot on upgrades, unlock classes from Elemental-Wizard to Cannon-Pirate, and level 20 unique skills like Farming, Sailing, and Construction!

77% positive of 30,145 reviewsPlaying now: 12,624Free

OxyRail

Oxygen Train is an open-world survival train game. Wake up in a world lacking oxygen. Chop trees, mine, gather resources, upgrade your unique train. Survive by planting, fishing, farming, exploring, fighting. Build your train kingdom. Supports 1-16 online co-op.

80% positive of 1,160 reviewsPlaying now: 119$14.99

CarX Drift Racing Online 2

A drifting simulator featuring an authentic competition format and a judging system inspired by modern drift championships. Enhanced and updated physics, developed in collaboration with the CarX Motorsport team.

72% positive of 1,373 reviewsPlaying now: 169$24.99

Supermarket Simulator

Run your own supermarket! Stock shelves, set your prices, take payments, hire staff, expand your store, handle shoplifters, and design your layout. Purchase goods from online or local markets around town, and personally deliver online orders to your customers.

92% positive of 79,879 reviewsPlaying now: 3,408$19.99

MOGGED: Looksmaxx or Die

Friendslop survival extraction horror game about desperately looksmaxxing against a rising quota. Raid nightly frat parties for questionable gear while something inside hunts the ugliest player. Cook peptides, try risky procedures, and reach True Adam before it drags you into another room.

68% positive of 286 reviewsPlaying now: 41$6.99

Mall Rivals

Competitive mall simulation. 1-8 players open stores in the same mall, fight for customers, crush rivals. Team up or go solo. Fair play or dirty tricks? Your call. Procedural maps, employee system,mall cops, smugglers and physical mechanics.

75% positive of 217 reviewsPlaying now: 13$14.99