Top similar games like COS-MOS:

Bitter Critters is a multiplayer Co-op roguelike pub crawling game. Explore procedurally generated towns and dodge silly obstacles!

Hadalis is a co-op deep sea survival game where every mistake can be fatal. Alone or with a crew, descend into the hadal zone while keeping your fragile submersible intact as pressure, creatures, and failing systems push you to the brink. Will you endure the abyss?

In What The Coffin, you and a friend face the wildest challenge: hauling a wobbly corpse through a chaotic world of physics-based obstacles! It’s all about coffin-cooperation. If you drop it, you're both going six feet under! Can your friendship survive the madness?

Dung Ho! is a co-op physics game where you and your friends are dung beetles rolling a (dung) ball into a hole.

A co-op adventure about carrying your king back to your goblin stronghold with up to 3 of your goblin friends. Sadly the king isn't being very cooperative as he's dead.

Sky Pirates is a cooperative steampunk pirate adventure game. Sail aboard a flying ship, explore islands, and transport treasures for a pirate organization… all while avoiding celestial dangers!

Climb out of the grave and into chaos in this co-op physics platformer set in a cursed Wild West. Blast each other across deadly parkours to survive a world where the only rule is: don't fall.

Dig, build rail, and survive underground as a goblin miner for WHAAG MINING INC. Light your path or the darkness will drain your life. Explore fully destructible biomes, fight hostile creatures, and hunt the legendary Giant Nugget, solo or online co-op

In this physics-based co-op platformer, you and a friend must carry your short-tempered king through deadly medieval courses. Dodge traps, maintain balance, and work together to reach the throne room. One wrong step, and the king might crown you with his rage!

Dive into a chaotic, free-to-play party royale set in a hilarious dystopian future! Compete in absurd minigames, explore a vibrant sci-fi world, and outsmart your friends in this ever-evolving social adventure.

A chaotic co-op survival game for 1–4 players where you travel the trail, manage supplies, survive disasters, and argue with friends. Work together to keep the wagon moving, adapt to random events, and try to make it to the end in one piece.

A chaotic online co-op survival-crafting adventure where three little pigs build a rolling wagon-home, survive the wolf each night, and travel through a fairytale world.

Harness the Sixth Force: a living bond that keeps you close and powers your energy whips. Levitate, swing, freeze obstacles, fight ridiculous enemies, and solve puzzles on the run through sweet chaos in a comedy co-op adventure for two where something stranger waits just beneath the sugar coating.

Escape a vertical nightmare with up to 4 friends using physics-based parkour. Equip Magic Rings to customize your climb. Don't let go, just keep your Hands Up.

What'Sub is a 4-player co-op submarine extraction game where you pilot a rust-bucket submarine into the depths of the Bermuda Triangle to recover treasure from the ocean’s seafloor. Gear up, descent, risk everything to bring your haul back to the surface, then dive again to ever deeper levels.

Goal Gang is online multiplayer football built for pure chaos. Take control of a single player and jump into intense action where teamwork wins games until everything breaks loose.

🐸Up to 8 player co-op extraction puzzle-platformer where you swing, jump, catapult your friends, and eat eat EAT until you grow into a humongous Megafrog. Squad up with your frog friends and storm the sewers for the glory of the Swamp King!🐸

A frantic co-op puzzle game where a Pilot and an Air Traffic Controller must communicate, decrypt, and improvise to save a failing aircraft. Talk fast, solve faster, and try not to crash.

Explore ancient tombs and ruins in this 4-player, turn-based party game! Master cartography as you map uncharted paths, uncover secrets, and ruminate over your next move. Work together or sabotage one another with a variety of items, and discover hidden treasures and the mysteries of your expedition

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.

Plank is a frantic co-op builder where you and your friends race across a collapsing canyon. Place planks, grab upgrades, fight off enemies, and outrun a giant wall of death. Build fast, move smart, and try not to fall before reaching the end!

very normal rail game is a physics-driven cart game where staying on the rails is the only rule. Control your cart and survive unforgiving rails that punish even the smallest mistake.

Survive the world’s most chaotic road trip! Team up with friends to drive, repair, and argue your way through treacherous terrain, unpredictable weather, and mysterious small towns in a physics-driven co-op adventure.

Physics-based chaotic co-op adventure game where communication and teamwork are your only hope and also your biggest threat. Paddle in sync, blame each other at every turn, crash into obstacles and try not to drown (yes, it's optional) while questioning your friendship, together.

Friendslop Drive is a chaotic co‑op driving game where one car is shared by multiple players. As one of the top friendslop games, teamwork and rivalry collide on a mysterious island. Can your crew reach the PEAK of madness and escape together? Only the best bros survive the ride!

An online 1-8 player golf game where everyone plays at the same time. Swing, shoot, sabotage, and finish first by any means necessary in a free-for-all rush to the hole.

Fight and survive in this post-apocalyptic world, infested by wild mutated monsters! Challenge your skill as a Hunter against these dangerous beasts!

Astro Out is a challenging platformer where you’ll need skill and determination, so be careful, one wrong jump can cost you a lot. After crash-landing on a mysterious and distorted planet, you'll need to find a way out while uncovering the cause behind its strange events.

Pizza Oof! is a chaotic co-op adventure game where you and your friends deliver pizza down a treacherous river. Steer your fragile raft, dodge menacing wildlife, and safely deliver the pizza before everything falls apart!

Form your team, grab the objects, match them, and outscore your rivals! Pair Panic delivers fast-paced, competitive multiplayer matching chaos, while also letting you test your skills against the clock in single-player mode.