S.E.M.I. is a single-player and co-op action platformer with puzzle elements. Play as patients of an unusual clinic, take experimental drugs, interfere with each other, and be ready for chaos and unpredictable side effects!
If you loved these, you'll love this
No game lists S.E.M.I. – Side Effects May Include... as one of its co-op favourites yet, so here are the closest matches by Steam tags instead.
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!
If you loved these, you'll love this
You find yourself all alone in the vastness of outer space! Being alone makes you slow and weak. Take your Linky with you and confront the challenges head-on! Linkies is a co-op game that creates unbreakable bonds and makes you faster and stronger! Can you make it to the end of space?
If you loved these, you'll love this
Dumb Ways to Build is a chaotic, physics-based co-op game. Team up with friends to assemble your crew and take-on dangerous construction jobs. With all the gear and no idea, work together to build your path forward, or die trying!
If you loved these, you'll love this
Become king... if your friends let you. Scramble through chaotic airships and floating debris to claim the crown, then survive one minute of bombs, panic, and betrayal before returning as an angel or devil spectator.
If you loved these, you'll love this
A challenging ball game where you can compete to climb the top 100 leaderboard, play with friends, or chill in offline single-player mode.
If you loved these, you'll love this
Moon Crashers is a 4-player online co-op game. Crash-land on the lunar surface with your squad, drift across craters, scavenge junk & rare minerals, uncover ancient ruins, build your ride, and rocket back home. Think you can make it home?
If you loved these, you'll love this
A chick. Human legs. One goal: reach the Golden Leg Press. Chick That Never Skipped a Leg Day is a brutal-but-fair 3D challenge platformer you can play solo or online with friends, master the movement, and try not to fall.
If you loved these, you'll love this
A hardcore third-person platformer that blends precision climbing with ruthless RNG, where every attempt tests both your skill and your luck as one bad outcome can send you back to the bottom.
If you loved these, you'll love this
Glocktopus is a free-to-play 3D comedy puzzle game where you control an armed octopus, using your trusty sidearm, aquatic gadgets, and clever environmental interactions to overcome comedic challenges and escape the aquarium in pursuit of the local mafia’s Golden Gun.
If you loved these, you'll love this
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?
If you loved these, you'll love this
