Steam

SIDE EFFECTS

Also known as SIDE EFFECTS, se, side effects

A twisted trial of pill roulette for up to 4 players (solo or online). Pick your poison. Use experimental items to shift the odds. And remember: only one of you can survive.

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Last update

19 May 2026

Original sources

Latest update

AnnouncementPublished 17 Dec 2025

v1.09Update v1.09

Hello treasured test subjects! We're happy to announce a new patch, fresh from the testing facility. Our goal has been to stabilise multiplayer and enhance the player experience - We're happy to bring forward a few smal…

3 changesGameplayPerformance

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Latest updates

Update history

Browse past updates and patch notes for this game.

11updates

December 2025
Beta v1.09Hello test subjects! We've just put a build (v1.09) up on the Beta branch (password: dodrugsnothugs). It has another fix for non-host players leaving mid-match. Previously the player's character despawned once the playe…Announcementv1.091 changeCompatibility16 Dec 2025
Hotfix 1.08Hello, treasured test subjects! We’ve prepared a small patch today that tidies up a couple of issues reported last night. Here’s what’s included in Hotfix v1.08: • Soft lock fix when non-host players leave We resolved a…Announcementv1.082 changesFixGameplay11 Dec 2025
Patch v1.07Hello, treasured test subjects! We’ve been working through your reports and have prepared a new update focused on improving stability and usability across the board. Here’s what’s included in Patch v1.07: Improved multi…Announcementv1.075 changesFixPerformance10 Dec 2025
UPDATE v1.05 Hello, treasured test subjects! Your continued compliance has been invaluable. Thanks for your support and feedback, we’re rolling out a fresh dose of improvements for your… well-being. Here’s what’s been a…v1.056 changesGameplayUI/audioStore09 Dec 2025
November 2025
10000 Patients have participatedHello, treasured test subjects! We’re pleased to announce that SIDE EFFECTS has officially sold 10,000 copies. Thank you so much for your continued participation and for providing the invaluable feedback that keeps this…Announcement1 changePerformance23 Nov 2025
Side Effects is out today! Hello, treasured test subjects! The day of the trial is finally here. Side Effects is out now!!! As well as the solo player mode from the demo, the final version of Side Effects has online mul…Patch notes21 Nov 2025
Side Effects gets multiplayer, launching 21st November!Hello, treasured test subjects! We've got big news today: Side Effects has a release date and it’s super soon! We’ll be launching on the 21st of November! On top of that, we can also finally reveal that the game will no…Announcement11 Nov 2025
October 2025
Our demo is in the Steam Next Fest!Hello, treasured test subjects! Just a small update for you today – Side Effects is in the Steam Next Fest! Our new updated demo (new mechanics, visuals, and basically a lot closer to the launch version than the itch.io…Announcement2 changesGameplayWorkshop13 Oct 2025
Dear Patients, We’re pleased to announce a small but potent dose of improvements has been administered to Side Effects! This update refines several treatments and introduces a few new adjustments to help stabilize your…v0.917 changesGameplayBalanceStore09 Oct 2025
Hello, treasured test subjects I’m happy to report that after a lot of hard work from our dedicated team of researchers, the new demo for our ‘Buckshot Roulette x Big Pharma’ game Side Effects is available to play on St…2 changesGameplayPatch notes03 Oct 2025

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