Top similar games like S.E.M.I. – Side Effects May Include...:

A co-op game where you have no legs. Search different maps and clear trials to appease Gods and earn your freedom - all while a giant, quirky pair of legs hunts you down.

An online co-op puzzle platformer physics game in space! You and your budz suit up and join the experimental astronaut training program. There is no catch. Just survive orbital space stations.. somehow.

YO UP! is a chaotic co-op physics building game where one wrong move can collapse everything. Build unstable towers solo or with friends, climb floating islands, and reach for space... if your tower holds.

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.

Chained Together Crossing is a Co-op game where you and up to 4 friends are handcuffed and have to get to the other side of the street. Levels get progressively more difficult, and sanity will be lost.

Steer the jar with your pickles inside. Roll through trap-filled courses! A 1–4 player physics-based co-op chaos: clear obstacles without shattering the jar, return to checkpoints, and try wild tactics with friends. Easy to learn, hard to master.

Carry cargo together on a shared board with your jelly bear teammates! Each movement affects the board’s balance, and a single mistake can bring everything crashing down.

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

Join a fun adventure by rolling a log together! In this 2 player co-op platformer, become lumberjacks with your friend and keep your balance while moving forward on a log. Overcome obstacles by moving back and forth, reach the goal, and never give up. Knowing how to get back up matters.

Play in co-op as the crew of the world’s worst airline. Your plane is falling apart, your cargo is illegal, and passenger safety barely makes the list.

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

A co-op game where you and your friends embark on an epic journey to drag the goblin king’s dead body across the kingdom to resurrect him. Use brains, brawn and crazy goblin magic to navigate the tricky terrain and puzzles that lie in your path.

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!

Tank Mates is a chaotic physics-based co-op platformer where one or two players share a single tank to tackle a brutal military obstacle course. Coordinate, survive deadly obstacles, and try not to destroy your friendship.

Climb, jump, and try not to fall in this chaotic 8-player co-op parkour adventure set in a toy-filled room. Dodge obstacles, use your abilities, and stay on track — because one mistake can send you all the way back down. Try not to lose everything… or each other.

Saving Yellow Ox is a chaotic co-op climbing game where 2–4 players race through a floating countryside full of traps, moving objects, and ridiculous obstacles. A UFO has abducted the yellow ox, and the only way to save it is to climb higher, push your rivals, rewind time, and survive the madness.

BREAKING NEWS! A giant asteroid is about to destroy the Earth! The Moon is your last hope. Work together with friends to build a fragile tower from everyday objects.

You are a salmon, performing platforming that feels as satisfying as it feels ridiculous that a salmon can do it. Jump off walls, race your salmon friends, learn the ways of the salmon. Also, did you know that salmon are magnetic?

Grab your gear and your friends for a hilarious, golden-age co-op adventure! Dive into cursed temples, hunt for the ultimate treasure, and work together to stay alive. Beware of everything and everyone... after all, only the survivors get to split the gold!

An online co-op game where your livelihood depends on how well your moving company can move valuable furniture. Team up to carry the sofa up the stairs and keep your financials only mildly tragic. Coordinate, communicate and cause chaos!

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?

Climb 2500 meters of danger, sound-cued falling platforms, and no mercy on Hard mode. Play solo or in 1–6 player multiplayer – can you reach the airship at the top?

A Psychic Odyssey Through the Minds of Misfits, Monsters, and Madmen. This classic action/adventure platformer from acclaimed developers Double Fine Productions follows the story of a young psychic named Razputin.

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!

A chaotic snack-stealing raccoon party game. Compete in wild minigames, explore interactive levels, and build your treehouse base solo or with up to 3 friends online.

An online co-op adventure game about aliens making off with gadgets created using extraterrestrial technology. The anti-alien alarm can't stop all of us! Use physics-based objects to create havoc and extract with these powerful gadgets.

Multiplayer in Minesweeper? Yes! Play with your friends or random party in classic Minesweeper or try crazy challenging modes! Fun and hard simultaneously!

Hijinks High is an online co-op game that turns an average school day on its head. Group up with up to five other players to cause as much ruckus as possible! A vast arsenal of booby traps, hoodwinks, and even bodily fluids will help you accomplish your goals and be the school’s menace!

You and your friends are in trouble. Big trouble. You’ve accidentally killed someone, and now you have to get rid of the evidence. "We Are So Cooked" is a 1-4 player co-op physics-stealth game where the objective is simple: Get the body to the exit. The execution? That’s the hard part.

Keep It Up! is a co-op slapstick physics game about keeping a balloon from touching the ground. You and up to three Facility test subjects scramble through chaotic obstacle rooms while slapping, jumping and colliding to keep the balloon up. Will you be able to Keep It Up!?

Find your inner ninja with the all-new LEGO NINJAGO Movie Video Game! Play as your favorite ninjas to defend Ninjago from the evil Lord Garmadon. Master the art of Ninjagility by wall-running and high-jumping, and battle foes to rank up and upgrade the ninja's combat skills.