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SIDE EFFECTS official game artwork

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SIDE EFFECTS Wiki

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.

Steam ↗Windows
GameWiki EditorialReviewed 5 guide topics

GET YOUR BEARINGS

About SIDE EFFECTS

Side Effects is a tense, turn‑based medical roulette game where up to four test subjects compete to outlive each other. Each round presents a selection of pills—some helpful, some harmful, and some causing instant death—requiring careful resistance management.

Between rounds players can choose experimental items such as vaccines or mouth clamps to shift odds. The title offers a single‑player experience and a multiplayer mode for 2‑4 players, with online PvP and accessibility options like custom volume controls and a mouse‑only mode.

01 / THE GUIDE

Game Premise

Side Effects pits up to four test subjects in a twisted medical trial where only one can survive. The core objective is to outlast opponents by managing resistance against unknown pills.

Each pill can affect mind or body in unpredictable ways, and reaching zero resistance ends the player’s participation. The hidden effects create tension each round.

  • Observe early pill outcomes to gauge risk.
  • Prioritize resistance when it drops low.

02 / THE GUIDE

Pill Types

The game includes six distinct pill types that appear each round. Some provide benefits, others are harmful, and a few cause instant death.

Because effects are hidden until consumption, players must decide whether to gamble on a pill or conserve resistance for later rounds.

  • When resistance is low, favor pills that have shown benefits.
  • Avoid unknown pills if you are near zero resistance.
SIDE EFFECTS official gameplay screenshot
Publisher-provided gameplay image · hirohun, Mr.Pootsley, Jaybooty, Lofar42

03 / THE GUIDE

Experimental Items

Between rounds, players can select from a range of experimental items and treatments, including vaccines and mouth clamps. These items are intended to shift odds in the player’s favor.

Using items adds strategic depth beyond pill selection, allowing players to influence future outcomes and manage resistance more effectively.

  • Deploy items that shift the odds in your favor before a high‑risk round.
  • Consider how items might combine to affect pill odds.

04 / THE GUIDE

Multiplayer Mode

Side Effects supports a multiplayer mode for two to four players, enabling online PvP where opponents bluff, adapt, and use every tool at their disposal.

The competitive setting adds a psychological layer, as each participant tries to outlive the others by managing resistance and manipulating item choices.

  • Watch opponents’ resistance levels to anticipate their pill choices.
  • Notice opponents’ item choices that may hint at their strategies.

05 / THE GUIDE

Accessibility Features

The title provides custom volume controls, a mouse‑only option, and the ability to play without timed input, allowing players to adjust the experience to personal needs.

Stereo sound and Steam Cloud support are also listed, offering audio flexibility and cloud‑based save handling.

  • Adjust volume sliders to match your environment.
  • Enable mouse‑only mode if you prefer point‑and‑click interaction.

WATCH THE GAME

SIDE EFFECTS videos

Official trailers & gameplay

INSIDE THE WORLD

Screenshots & game images

5 official screenshots

IN THIS WIKI

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COMMUNITY

Player discussion

    QUICK ANSWERS

    SIDE EFFECTS FAQ

    How many participants can join a single game of Side Effects?

    Side Effects allows up to four participants in a match, with multiplayer options for two to four players.

    What occurs when a player’s resistance reaches zero?

    Reaching zero resistance results in death, ending that player’s participation in the trial.

    Can the game be played without a controller?

    Yes, the game offers a mouse‑only option and can be played without timed input, allowing non‑controller play.

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    SOURCES & CREDITS

    Official resources and further reading

    Original editorial guidance. Game imagery and trailers are provided by the publisher through Steam. Media and reference links checked 2026-10-23. Game versions, supported platforms, and balance can change; consult the linked release notes for current details.