S.E.M.I. – Side Effects May Include...
A fun cooperative action platformer game for 1-4 players about escaping from a special clinic. Become a patient, take experimental drugs, get superpowers… And unpredictable side effects!
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The top results based on the latest update are Shoot Your Pal [Score: 0.9], Buddies in a Ball [Score: 0.9] and What The Coffin [Score: 0.9] The top rated games you can find here are R.E.P.O. [SteamPeek Rating: 11.0] ranked #16, PEAK [SteamPeek Rating: 10.6] ranked #26 and POPUCOM [SteamPeek Rating: 5.0] ranked #8 Also don't forget to check the newest releases Flood [Release date: 2025-09-08] ranked #9, PEAK [Release date: 2025-06-16] ranked #26 and POPUCOM [Release date: 2025-06-01] ranked #8 While it is tempting to play with the newest and the best, there might be some other gems in the results, like My Coworker Is An Idiot [SteamPeek Rating: 4.9] ranked #14, R.E.P.O. [SteamPeek Rating: 11.0] ranked #16 and PEAK [SteamPeek Rating: 10.6] ranked #26.
A fun cooperative action platformer game for 1-4 players about escaping from a special clinic. Become a patient, take experimental drugs, get superpowers… And unpredictable side effects!
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.
Trapped inside of a giant rolling ball, you and up to 4 friends must roll, bounce, and scream your way through diverse levels in this hilarious co-op platformer.
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?
You think you're a smart little fella, huh? Well, come on down and prove it in the "Are You Smarter Than The Crowd?" -gameshow! Compete with or against the crowd in a fun I.Q game, hosted by our lovely host!
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!
We Gotta Go is a co-op horror-ish game where you have to find the bathroom before you S#!T your pants! Desperately search a haunted mansion, grabbing items, battling ghosts, and managing your gut on a supernatural hunt for sweet relief.
Venture together with your friends on an unknown planet. Use color switching, match-3 shooting, and artifact powers to overcome challenges and keep advancing. What lies ahead of you is an adventure filled with wonder, hope, and much more to discover!
Prepare yourself for the flood! Build crazy, wobbly boats and battle your friends until only one is left afloat.
It’s Mealtime! is a multiplayer physics game where teams of 4 players work together to manage a restaurant, even if that means having to fight against another team!
Slap Squad is a physics based, online multiplayer brawler where you battle your friends with wobbly toon-like characters. Use weapons and powerups in your arsenal to finish objectives and eliminate other players!
Eternal Vortex Is A Online Multiplayer Shooter Where The Players Start Off With Basic Weapons, But To Become More Powerful You Have To Run Around The Map And Find A Better Weapon.
JUST A GUY is an online multiplayer ragdoll game. Play with physics, explore small open worlds, drive vehicles, use fun items and complete objectives to earn new cosmetic outfits!
Together with Steve, your coworker, deliver glass to the construction site. Try not to damage the city too much.
Roguelike survival game that focuses on combat and exploration. Have Fun! Inspired by Muck.
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An online co-op horror game with up to 6 players. Locate valuable, fully physics-based objects and handle them with care as you retrieve and extract to satisfy your creator's desires.
Toy Escape is a co-op game for up to 4 players where you play as a small toy trying to climb your way through a giant house to reach the rooftop and escape. Jump, climb, and find your way out in this fun, toy-sized adventure!
Otter chaos is a 3D cute, cooperative puzzle solving game where you play as otters who scramble to chase their mischievous babies back home before the zookeeper notices!
A co-op adventure about driving your Recreational Vehicle home.
Social deduction party game about Civilians and Maniacs. Civilians have to repair the school bus or sniff out and expulse all Maniacs with limited supplies. Maniacs have to prevent Civilians to complete their goals.
Multiplayer in Minesweeper? Yes! Play with your friends or random party in classic Minesweeper or try crazy challenging modes! Fun and hard simultaneously!
Jump, Swing and Explore your way through beautiful environments and exciting challenges.
Tear your enemies limb from limb and protect your faction from the enemy mechs. This rogue-like lets you mix and match body parts to fully customise your brawler for combat. Cause chaos in this physics-based mech fighter! Build & share your own levels in our forge mode!
A chaotic solo or party game where you jump through obstacle-filled levels. One wrong move, and your bottle cracks!
Dumpster Divers is an online co-op scavenging game where rejected puppets turn trash into treasure. Dive into alleys and dumpsters with up to 4 friends, outsmart bumbling cops, and haul your loot home to sell. Use scraps to craft helpful tools and climb the ranks of society one dumpster at a time.
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?
As part of the Cleanup Crew for The <REDACTED> Company, you are designated to go in after we have detected an entrant dying to an Anomaly and retrieve vital components for us. Pair up to 4 players to form a Crew and get to cleaning.
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This is a party game where each player has a secret identity. Use descriptions to hide your team and guess others' identities. As the danger zone shrinks, collect items, defeat enemies, and avoid harming teammates! Neutral players aim to eliminate everyone. Use strategy to win!
Goi: Spooky Run is 3-10 players “Catch me if you can” online party survival game. Put your friendship to the test! Prank your friends, survive the ghost hunt, and be the last one standing in this chaos!
Hands down the most adventurous and handsome hand in the world! You play as a hand on a gripping handventure where you single-handedly face dangerous obstacles and de-feet a handful of evil feet.
A cute, chaotic game about biting your friends! Multiplayer tag with your teeth! Friends And Fangs is a chaotic, colourful multiplayer survival escape game, played in fast-paced 8-10 minute rounds! Rush to escape the island with your fellow ‘fluffies’ or hunt them down as the scary ‘mutant’!
Drop your opponents in the narrowing upward field, watch out for traps and overcome challenging obstacles to come first!
"Look Locked": A co-op puzzle game where doors only open, if you can see them being opened. Work together, time your actions, and communicate to unravel challenges. Coordination and observation lead to victory!
Animal Express is a chaotic co-op package delivery simulation game for one to four players. Assemble your team of couriers and pick, pack and deliver your orders in time!
GOBSMACKED! is a chaotic multiplayer party game featuring goblins who do what they do best; cause trouble. In this physics-fuelled mess of mayhem, you’ll brawl, throw, and ragdoll your way through competitive and cooperative mini-games. Grab your goblin crew and dive into the chaos!
Discover your breath as you shoot your way through a whimsical madness! Slash and dash in a dynamic dance against hordes of enemies and bosses! Accept your losses, and bring a friend, it's time to go again...
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