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

[Indie Game Review]

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A chaotic co-op escape from a deranged clinic where every pill grants wild powers and even wilder physics-driven side effects.

If your favorite gaming nights are the ones where nobody really knows what’s happening, but everyone is crying with laughter, S.E.M.I. – Side Effects May Include… is your kind of indie chaos. Developed by Two Horn Unicorn, this Early Access co-op action-platformer drops you and up to three friends into a twisted clinic where experimental pills grant ridiculous powers and side effects.

Concept & Setting

S.E.M.I. casts you as patients in a bizarre mental hospital, strapped into straitjackets but free enough to stage a chaotic breakout. The “story” is light, focusing on dark humor, slapstick violence, and emergent co-op disasters. Think party-game energy wrapped in a surreal asylum theme.

Gameplay & Mechanics

S.E.M.I. is a cooperative escape mode with roguelite flavor:

Pills, Powers & Side Effects

The headline mechanic is the pills, which heal your “sanity” and apply wild side effects like:

Effects stack, creating unpredictable chaos that defines the game’s charm.

Co-op Structure & Progression

A typical run involves:

The design thrives on communication and improvisation, making every run memorable.

Atmosphere & Presentation

S.E.M.I. features a cartoonish 3D style with exaggerated ragdoll physics and goofy characters. The audio design adds to the silliness, with vending machines blaring tunes and lip-synching voice chat. It’s not polished, but it nails its expressive, comedic sandbox vibe.

Indie Spirit & Early Access Roadmap

Proudly indie, S.E.M.I. is developed by Two Horn Unicorn with a clear Early Access plan:

It’s a bold, weird project that’s exciting to follow.

Strengths

Verdict

S.E.M.I. – Side Effects May Include… is a beautiful mess in the best indie sense. It’s about laughing at chaos, screaming at side effects, and enjoying unpredictable co-op experiences. If you love quirky indie games and want to support a small studio with a bold idea, S.E.M.I. is worth checking out.