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

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App ID 3957630
App Type Demo
Developer
Publisher Two Horn Unicorn
Franchise S.E.M.I.
Supported Systems Windows
Technologies Unreal Engine
Last Changenumber 31599490
Last Record Update 10 October 2025 – 16:11:50 UTC ()
Release Date 26 September 2025 – 18:05:15 UTC ()
Parent App S.E.M.I. – Side Effects May Include (3957560)
❓ 68.52%
55 reviews
26
In-App

A fun cooperative action game for 1-4 players about escaping from a special clinic. Become a patient, take experimental drugs, get superpowers… And unpredictable side effects!

Additional Information

This demo is excluded from Steam Family Sharing because: This content type cannot be shared

Developer Two Horn Unicorn
ReleaseState released
Publisher Two Horn Unicorn
Exclude from family sharing (exfgls) 6 (This content type cannot be shared)
Store Release Date 26 September 2025 – 18:05:15 UTC ()
osarch 64
Social Media https://discord.gg/RP5ngrvTRK
https://www.linkedin.com/company/two-horn-unicorn/
https://t.me/semidevdiary
https://www.tiktok.com/@semidevdiary
https://vk.com/thu_games?from=groups
https://x.com/twohornunicorn_
https://www.youtube.com/@twohornunicorn_games/
Primary Genre Action (1)
Store Genres Action (1), Indie (23)
Steam Release Date 26 September 2025 – 18:05:15 UTC ()
Store Asset Modification Time 24 September 2025 – 16:27:52 UTC () (1758731272)
library_assets
library_capsuleen
library_heroen
library_hero_bluren
library_logoen
library_headeren
logo_position ↴
pinned_positionBottomLeft
width_pct50
height_pct100
osextended empty string
Is free on the store? Yes
review_score 6
review_percentage 75
Detected Technologies (?) Unreal Engine, Intel_oneTBB SDK, NVIDIA_Nsight_Aftermath SDK, Ogg SDK, Vorbis SDK, XAudio2 SDK
controllertagwizard Yes
First seen on SteamDB 14 August 2025 – 15:42:54 UTC (), in changelist #30593013

Supported Languages

8 Languages Interface Full Audio Subtitles
English Yes
Russian Yes
French Yes
German Yes
Spanish - Spain Yes
Simplified Chinese Yes
Portuguese - Brazil Yes
Japanese Yes

Categories

Single-player Online Co-op Game demo Multi-player Co-op

Accessibility Categories

Custom Volume Controls Stereo Sound Playable without Timed Input

Assets

Load all asset images
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header_image
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library_assets_full
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library_hero ↴
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library_hero_blur ↴
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logo_position/pinned_positionBottomLeft
logo_position/width_pct50
logo_position/height_pct100
library_header ↴
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Assets
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community_icon89cc258a060723fe8d073faecb00800a4d2a6735.jpg
page_background_pathapp/3957630
timestamp26 September 2025 – 18:05:17 UTC
Trailers
980913 ↴
trailer_nameS.E.M.I. - Demo Trailer
trailer_category1
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all_agestrue
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timestamp1758705329
969067 ↴
trailer_nameS.E.M.I. - Teaser
trailer_category2
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trailer_480p/video/mp4257191823/movie480.mp4
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all_agestrue
is_highlighttrue
timestamp1758102867

Launch Options

0. Unnamed launch option
Executable SEMI.exe
Launch Type Launch (Default)
Operating System   windows
CPU Architecture 64-bit only

Configuration

Key Value
installdir S.E.M.I. – Side Effects May Include Demo
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