Game Overview
A sterile medical chamber becomes an arena of nerve-racking suspicion in SIDE EFFECTS, an indie horror party game built around deadly doses and imperfect information. Up to four unwilling patients take turns swallowing unknown pills, hoping for a useful treatment while knowing that one bad choice can end their run immediately. Its horror comes less from gore than from anticipation: every bottle is a gamble, every opponent may be bluffing, and survival often depends on reading the room as much as reading the odds. The mood sits somewhere between a grim clinical experiment and a tabletop mind game where nobody can safely trust anyone.
Each round revolves around choosing pills and preserving resistance, the resource that determines how much punishment a body can endure. Helpful drugs, damaging compounds, and fatal doses create a shifting risk-reward puzzle, while players must decide whether to play conservatively or force others into worse positions. Intermissions let survivors claim experimental tools and treatments that can alter future rounds, from protective medical measures to nastier implements designed to disrupt a rival’s plans. Solo play offers a way to learn the systems against computer-controlled opponents, while local-style multiplayer for two to four players supplies the real tension as human players conceal information, make threats, and adapt to each other’s tactics.
The strongest idea here is how much drama SIDE EFFECTS extracts from a compact ruleset: six pill categories and more than 15 items are enough to keep individual sessions unpredictable without burying players in complexity. Resistance turns random chance into something players can manage, so smart item use and timing matter even when luck refuses to cooperate. Its stripped-back medical horror aesthetic reinforces the discomfort of being treated as a disposable test subject rather than a hero. Fans of bluffing-heavy party games, Russian-roulette-style risk systems, and unsettling indie concepts should find plenty to enjoy, especially with a full group; newcomers can grasp the basics quickly, while competitive players can dig into the psychological warfare.
Screenshots
Installation
- Click the green button below to be redirected to UploadHaven.
- Wait 15 seconds, then hit “Free Download.” (Free downloads may be slower — upgrade to UploadHaven Pro for faster speeds.)
- Once downloaded, right-click the .zip file and choose “Extract to SIDE EFFECTS.” (You’ll need 7-Zip for this.)
- Open the extracted folder and run the game as administrator.
- Enjoy! 🎮 If you see missing DLL errors, check the _Redist folder inside and install what’s needed.
System Requirements
- OS: Windows 10
- Processor: Intel Core i3
- Memory: 2 GB RAM
- Graphics: Relatively modern dedicted graphics card (Vulkan support required)
- Storage: 500 MB available space
- Additional Notes: Vulkan support required
Setup Guide & Troubleshooting
How do I fix missing DLL errors for SIDE EFFECTS (v1.09)?
After extracting SIDE EFFECTS (v1.09), navigate to the _Redist or _CommonRedist folder inside the game directory and install DirectX, Vcredist, and any other dependencies included.
What should I do if the downloaded file is corrupted?
The full archive is 897.56 MB — make sure your download completed fully before extracting. Use 7-Zip to extract the files. If you still see a "file corrupted" error, re-download and try again.
Why should I run the game as administrator?
Right-click the game executable and select "Run as Administrator" to avoid save file issues and permission errors. This is especially important on the first launch.
How do I update my GPU drivers for this game?
The game won't launch — what should I try?
Try running in compatibility mode, install the latest DirectX runtime, or install the All-in-One VC Redist Package.
My antivirus is blocking the game — is it safe?
Antivirus false positives are common with pre-installed games. Temporarily pause your antivirus during extraction to prevent it from quarantining game files. You can re-enable it after the extraction completes.