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Quantum Suicide

Game overview

Quantum Suicide

Quantum Suicide is a game of betrayal, deception and romance in the cold depths of space.

Visual Novel Story Rich Mystery Choices Matter Multiple Endings
Last tracked players
0
All-time peak
1
24-hour change
Unavailable
Steam reviews
78.3% positive
115 reviews · via SteamSpy

Delayed observation · last tracked . Values marked unavailable are not estimated.

About this game Read the full description

Quantum Suicide is a game of betrayal, deception and romance in the cold depths of space.

This science fiction thriller visual novel tells the tale of an intergenerational mission and its diverse crew, fighting against a deadly AI (and each other) for the chance to survive. Strategy, love interests and quantum mechanics await you. Your choices change the fate of everyone in Quantum Suicide.

You play as a researcher aboard a spaceship on an epic mission to find humanity a new home. The mission is jeopardized by a corrupted A.I system that forces you to play "The Deletion Game", a weekly game where you must battle your crew mates for survival. Prepare to make both friends and enemies of your crew members as you play through rounds of "The Deletion Game". Can you see the Everett's mission through to the end...alive?

Quantum Suicide features:

- Over 30 different endings

- The choice to play as a boy or a girl

- 7 romance endings (Including 3 Male, 3 Female and the A.I. system)

- The romance options have their own sexual preferences - (romance and friend zone endings depending on your choices)

- Original Soundtrack

- Available in English and Japanese, with full voice acting

- Death around every corner

Can you see the Everett's mission through to the end...alive?

*Please Note: Quantum Suicide does not follow traditional dating simulator/game structure of a point or flag system - narrative branches are based on character deaths. It is also a requirement to play as both the male and female protagonist in order to achieve the true ending.

Questionable design choices, I know, but whats done is done and you have been warned :)*

Current Build Version: 29.10.211.

To ensure your game is up to date, please select Extras from the Main Menu > Credits > The version is listed in the bottom left hand corner :)

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Halloween Extra! Dai's Trick or Treat! Happy Valentine's Day Quantumers! Bug fixes and patches on hold until February :)
System requirements Windows · macOS · Linux

Windows

Minimum

Minimum:
  • Requires a 64-bit processor and operating system
  • OS *: Windows XP or higher.
  • Processor: 2.0 GHz Core 2 Duo
  • Memory: 2.0 GB GB RAM
  • Graphics: OpenGL 2.0 or DirectX 9.0c
  • Sound Card: If you want to hear the beautiful voice acting, it is recommended.

Recommended

Recommended:
  • Requires a 64-bit processor and operating system

macOS

Minimum

Minimum:
  • OS: Version: 10.6+
  • Processor: CPU: 2.0 GHz Core 2 Duo (64 bit only)
  • Memory: 2.0 GB RAM
  • Graphics: OpenGL 2.0
  • Sound Card: If you want to hear the beautiful voice acting, it is recommended.

Recommended

Recommended:

    Linux

    Minimum

    Minimum:

      Recommended

      Recommended:
        Game details Languages, features & support
        Publisher
        Cotton Candy Cyanide
        Brazilian rating
        16
        Steam Germany rating
        18
        Content warning
        Quantum Suicide has both violent content and adult themes. As the player, you partake in a "deletion game", which the loser is then executed. There are CG's for each of these executions. The game also allows for paths that have romantic themes. There are suggestive CG's such as kissing, in showers and baths (no nudity seen) and beachwear. There is also reference to, and CG's including alcohol usage.
        Achievements
        21
        Controller support
        full
        Features
        Single-player, Full controller support, Family Sharing
        Languages
        English*, Japanese*
        *languages with full audio support
        Compatibility & accessibility Steam Deck, controllers & access features

        Can I Play This?

        Steam declarations and Valve's Steam Deck compatibility result. Missing data is shown as unknown, never unsupported.

        Sources fresh
        Native Steam builds
        Windows: unknown
        macOS: unknown
        Linux: unknown
        Steam Deck
        playable
        Valve compatibility test
        Input
        Controller support: unknown
        Structured language support (2)
        LanguageInterfaceFull audioSubtitles
        EnglishYesYesYes
        JapaneseYesYesYes

        Third-party requirements shown by Steam

        Requires agreement to a 3rd-party EULA Quantum Suicide EULA
        Steam store page fresh · checked 2026-11-06 PCGamingWiki technical notes External link only; SteamIQHQ does not ingest PCGamingWiki content.
        More analysis Activity patterns, updates & developer tools

        Build a competitor report

        Game Insights

        Buy Verdict

        Wait — $19.99.

        Not the best time to buy. Price could improve with future sales.

        ▬ ~17 days until next sale

        Value Score

        Fair Value — 62th percentile.

        Price-to-player ratio ranks in the 62th percentile. Priced as Market at $9.99.

        ▬ Market pricing tier

        Genre Benchmarks

        Player Count Top 60%
        Value Ratio Top 38%

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        Developer Analytics

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        Frequently Asked Questions

        Is Quantum Suicide worth buying right now?
        Wait — $19.99. Not the best time to buy. Price could improve with future sales.
        When does Quantum Suicide go on sale?
        Not the best time to buy. Price could improve with future sales.
        Is Quantum Suicide free to play?
        Quantum Suicide costs $19.99 on Steam.
        What genre is Quantum Suicide?
        Quantum Suicide is a Adventure, Casual, Indie game.
        Who developed Quantum Suicide?
        Quantum Suicide was developed by Cotton Candy Cyanide and published by Cotton Candy Cyanide.
        What platforms does Quantum Suicide support?
        Available on Steam for Windows, macOS, Linux.

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