Game Detail

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

App ID 3957560 | Recorded January 29, 2026 at 01:42 PM

All-time low30% off

Action, Indie

Categories: Single-player, Multiplayer, Co-op, Online Co-op, Full Controller Support, Custom Volume Controls, Playable without Timed Input, Stereo Sound, Surround Sound, Family Sharing

English UIEnglish subtitles

Release date: January 23, 2026

Developer/Publisher: Two Horn Unicorn / Two Horn Unicorn

Mostly Positive 75% · 20 reviews

Open in Steam

Short description

Official Steam summary

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!

Current price

$5.59

All-time low

$5.59

12-month low

$5.59

Verdict

Buy now

Within 0% of the all-time low.

Price chart (last 2 years)

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Top reviews

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12 helpful

Bit too buggy and unbalenced to enjoy right now. Wait a little bit before you get this.

8 helpful

fun game, rage inducing at times. needs more levels to add to the chaos.

This page shows the last 2 years of price history and highlights all-time and 12-month lows. Data updates once per day; check the Steam store for exact sale timing.