S.E.M.I. – Side Effects May Include... Steam Charts, Sales, Players & Wishlists

S.E.M.I. – Side Effects May Include... is tagged as Action, Indie. It is published by Two Horn Unicorn. It was in Early Access and released on 23 Jan, 2026. PureGameStats tracks S.E.M.I. – Side Effects May Include...'s live Steam player count, all-time peak, review sentiment, estimated sales and price history. S.E.M.I. – Side Effects May Include...'s recorded all-time peak is 89 concurrent players on 21 November 2025. PureGameStats estimates 2,670 Steam units sold. It currently ranks #2,302 year to date on our top sellers list. Steam reviews are 86% positive across 113 responses. Platforms: Windows.

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

S.E.M.I. – Side Effects May Include... Steam Charts, Sales, Players & Wishlists

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!

Developer
Two Horn Unicorn
Publisher
Two Horn Unicorn
Platforms
Windows
Release Date
23 Jan, 2026
Official site On Steam
Est. Sales
2,670
PGS estimate High confidence
Top-Selling Rank
#2302
#2302 YTD
Current Steam Price
$7.99
Store data Standard Edition
Estimates are modelled by PureGameStats using multiple data signals. Direct data is sourced from Steam. View methodology →

S.E.M.I. – Side Effects May Include... Concurrent Players Updated hourly

Powered by PureGameStats.com
Hourly Daily Monthly Yearly
S.E.M.I. – Side Effects May Include... header image
Developer: Two Horn Unicorn
Publisher: Two Horn Unicorn
Platforms: Windows
Release Date: 23 Jan, 2026
Est. sales: 2,670 High confidence
Top-selling rank: #2302 YTD
Retailer Price (US) Discount
Steam $7.99 0%

Pricing History & Best Deals

View on Steam

Historical pricing on Steam (US).

$6.79
Steam Launch Price
Steam
$7.99
Steam Current Price
Steam
$6.79
Steam Lowest Price
Steam
$6.79
Lowest Recorded
Steam
$7.99
Current Lowest Price
Steam →
Steam Prices Around the World
Live Steam pricing across 27 currencies we track.
View all prices Hide prices
AU
A$ 11.79
BR
R$19,99
CA
C$ 10.49
CH
CHF 8.99
CL
CLP$4.200
CN
¥39.00
DE
7,79€
GB
£6.69
HK
HK$ 49.00
ID
Rp 69 999
IN
₹359.00
JP
¥1,099
KR
₩ 9,900
MX
Mex$ 99.99
MY
RM21.99
NO
79,00 kr
NZ
NZ$ 11.79
PH
₱249.00
PL
24,99 zł
RU
229 руб
SG
S$8.50
TH
฿179.00
TR
$4.49
TW
NT$ 159.00
US
$7.99
VN
75.000₫
ZA
R 79.00

Newest snapshot: 09 Sept 2026.

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

Join Discord
130
Members
Total
19
Online now
Live

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

Total reviews 113 Positive 97 Negative 16 Positive % 85.8%Rating Very Positive

Review Cloud

Reviewers praise
fun friendschaos funsymptomsfun customizationgoofy funcomedic premiseawesome crazycrazy lovedfun graphicalplatformers enjoyedfull funloved difficultenjoy chaoticfun motionlove customisation
Reviewers criticise
fun drugannoying platformsrare lovemediocre puzzlebest platformersenjoy right

What players are discussing

Praise and criticism mentions per topic, split by whether the reviewer recommended the game overall. Based on 31 recent English reviews (ingested 29 Aug 2026).

Ticks mark the typical silhouette for a Action game - overshoot = above the genre norm on that side.

Topic
Criticism mentions Praise
Mentions
Performance
Not enough mentions
-
Gameplay
10
11
Story
22
22
Graphics
5
Audio
Not enough mentions
-
Controls
6
Bugs
5
Value
Not enough mentions
-
Multiplayer
14
14
Replay value
Not enough mentions
-
PC System Requirements
Minimum and recommended hardware needed to run S.E.M.I. – Side Effects May Include....
View full requirements Hide requirements
Minimum:
  • Requires a 64-bit processor and operating system
  • 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:
  • Requires a 64-bit processor and operating system
  • 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
Frequently Asked Questions
Find quick answers about release date, pricing, platforms and more.
View FAQs Hide FAQs

What is the all-time peak player count for S.E.M.I. – Side Effects May Include...?

S.E.M.I. – Side Effects May Include... reached an all-time peak of 89 concurrent players on 21 November 2025.

How many copies has S.E.M.I. – Side Effects May Include... sold on Steam?

PureGameStats estimates S.E.M.I. – Side Effects May Include... has sold approximately 2,670 copies on Steam, with high confidence. The estimate is derived from Steam reviews, concurrent player peaks and achievement completion rates.

How is S.E.M.I. – Side Effects May Include... rated on Steam?

S.E.M.I. – Side Effects May Include... has 113 Steam reviews with a 85.8% positive rating (Very Positive).

What is the current price of S.E.M.I. – Side Effects May Include...?

S.E.M.I. – Side Effects May Include... is priced at $6.79 on Steam (currently 15% off). Full price history and best deals are tracked on this page.

When was S.E.M.I. – Side Effects May Include... released?

S.E.M.I. – Side Effects May Include... was released on 23 Jan, 2026. It was developed by Two Horn Unicorn.

Coverage & Updates

Latest from the official channels and across the games media.

Official Announcements

View all official announcements
  • No official announcements yet.

News & Media Coverage

No coverage yet.

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

Similar games based on tags, genre and audience.

View more games

Frog Sqwad 🐸

co-opphysics
76% pos. · 465 reviews

Pyramidion

co-opplatformer
80% pos. · 121 reviews

Trail & Error

co-opphysics
71% pos. · 146 reviews

Out of Time

co-opmultiplayer
60% pos. · 264 reviews

Trash Day

co-opphysics
97% pos. · 698 reviews