S.E.M.I. – Side Effects May Include
-86%- Genres
- Action, Indie
- Released
- 23 Jan, 2026
- Developer
- Two Horn Unicorn
- Publisher
- Two Horn Unicorn
S.E.M.I. – Side Effects May Include price history
£0.86 today90-day low £0.86 (26 Oct 2026)Lowest recorded £0.8690-day average £0.86
Today's price is the lowest we've seen in the last 90 days. Cheapest UK-working PC key across the stores we compare, any edition; tracked since 26 Oct 2026.
About this game
S.E.M.I. is a cooperative online game about escaping from a special clinic. Here, you and up to 3 of your brainless loyal friends play as patients, fighting staff and other patients while stumbling into all sorts of unexpected situations. Brawls, side-effect pills, and brutal platforming will absolutely challenge your clumsy friends’ hands sense of teamwork. Expect obstacles, puzzles, deadly traps, and rooms where a single wrong move can knock out the entire squad.
Communicate in voice chat and arrange sabotage help your friends pass through rooms, get out of traps and fight with opponents! In your arsenal: close combat, physics, amazing abilities and ... imagination!
Take pills and get abilities:
Bipolar force is an invulnerable monster, then a helpless rag!
Laser astigmatism — two sights, one laser… Where will he shoot?
Stendhal syndrome — are you looking at a painting? Now you're hysterical and destroying everything around you!
Alice's syndrome is either tiny or gigantic — have time to adjust!
Madness is near! You and your friends can go crazy and start running, jumping and fighting, and your abilities will become uncontrollable. Do you want to take back control? Take the pills :)
Locations are randomly generated from rooms with changing gravity, traps, moving walls, and other "pleasant" surprises.
After a successful escape, you will receive a medical report: "The patient was stable until he started hitting the guards with a bottle. Diagnosis: Overmotivation" or something worse!
Unlock new costumes and decorations. Let each new escape be more stylish than the previous one!
Will you and your friends be able to escape... or at least not go crazy?
Welcome to the mental hospital! Here, your abilities are a lottery, and your friends can be the most dangerous opponents!
Trailer
Screenshots
PC system requirements
Minimum
- OS
- Windows 10
- Processor
- Intel Core i5 series or Ryzen series
- Memory
- 8 GB RAM
- Graphics
- GTX 960 or AMD R9 290
- DirectX
- Version 11
- Storage
- 3 GB available space
Recommended
- OS
- Windows 11
- Processor
- Intel Core i7 series or Ryzen series
- Memory
- 8 GB RAM
- Graphics
- GTX 1660 or RX6600
- DirectX
- Version 12
- Storage
- 3 GB available space
S.E.M.I. – Side Effects May Include prices: questions & answers
What is the cheapest S.E.M.I. – Side Effects May Include price for PC?
The cheapest S.E.M.I. – Side Effects May Include PC key right now is £0.86 at Kinguin, 86% below the usual price. We compare 3 offers from 3 stores for PC, and prices update at least twice a day.
Cheapest price today: £0.86 at Kinguin (86% off, usually £6.69). We compare 3 stores for S.E.M.I. – Side Effects May Include, and prices update at least twice a day. Prices can change; the store's checkout price is final. Platform and region details come from each store's listing; the store's product page is final. Zemly may earn a commission if you buy through links on this site, at no extra cost to you (affiliate disclosure).








