HomeGamesUpdatesPricingMethodology
Steam

S.E.M.I. – Side Effects May Include...

Also known as S.E.M.I. – Side Effects May Include..., s e m i side effects may include, s-e-m-i-side-effects-may-include

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!

Last update
21 May 2026

Latest update

Patch notes

New Patch Is Live!

We’ve added something many of you were waiting for! Steam Achievements Achievements are now available — for escapes, failures, and questionable decisions. Steam Collectibles Now available: 8 trading cards 6 badges 5 emo…

1 changeGameplayRead patch notes

Update history

Browse past updates and patch notes for this game.

17 updates

Gallery

In-game media