PC $19.99 Region US
Games Adventure Quantum Suicide
Mature content
Adventure · Cotton Candy Cyanide

Quantum Suicide

Quantum Suicide
Mature content
Steam Deck Playable Windows macOS Linux
Mostly Positive · 78% of 118
DeveloperCotton Candy Cyanide
ControllerFull
Wait Chip's verdict · US updated 4 hr. ago

Good game, but it sits 100% of the way from its all-time low to full price. It drops harder in seasonal sales. Patience pays.

Why this verdict
Price position between all-time low and full price 100%
All-time low $9.99 · 17d ago
Player reviews 78% positive of 118
Quality score 78/100
Value score 0/100

Offers

Accepted regional prices from official stores

Official stores (1)
steam
checked 4 hr. ago Best price
steam, Official, $19.99
$19.99 Buy at steam
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About this game

What this game is, in the developer's words

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

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 :)

Media

Trailers and screenshots straight from the store page

Quantum Suicide screenshot 1
Quantum Suicide screenshot 2
Quantum Suicide screenshot 3
Quantum Suicide screenshot 4
Quantum Suicide screenshot 5
Quantum Suicide screenshot 6
Quantum Suicide screenshot 7

Price intelligence

Accepted price history and the lows that matter

Historical lows
All-time low ATL $9.99 2026-06-27
3-month low $9.99
12-month low $9.99
Current $19.99
Price events From the accepted price history · updates automatically
Jul 9, 2026
Sale ended · back to $19.99
Jun 27, 2026
New all-time low $9.99

Quantum Suicide price history and best deals

Quantum Suicide for PC currently sells from $19.99 at authorized stores. Its all-time low is $9.99, set on 2026-06-27.

Frequently asked questions

Answered from this game's own price and edition data

Should I buy Quantum Suicide now or wait?
Our verdict is wait. At 100% of the way to full price, it usually drops harder in seasonal sales, so patience tends to pay.
Is $19.99 a good price for Quantum Suicide?
$19.99 sits 100% of the way from the all-time low of $9.99 to the full price. It has been cheaper before, so there is room to wait.
Where can I buy Quantum Suicide?
Quantum Suicide is tracked at steam. We only list authorized stores here and always link out with a clean outbound link.
Scores
Steam reviews Mostly Positive · 78%
78% positive of 118
Media (7)
Tech
Steam DeckPlayable
SteamOSSupported
ControllerFull
Requirements
System requirements platform
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
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:
    Minimum
    Minimum:
      Recommended
      Recommended:
        Achievements (21)
        Mars is my home planet. 74.8%
        Venus is my home planet. 66.3%
        I Bid Thee Farewell. 57.2%
        I immediately regret my decision. 50.7%
        Liar liar, pants on fire! 50.5%
        Love is only skin deep. 47.2%
        I did it for love! 46.6%
        This game is to die for. 43.5%
        Facts
        DeveloperCotton Candy Cyanide
        PublisherCotton Candy Cyanide
        GenresAdventure · Casual · Indie
        ModesSingle-player
        Links
        Ratings
        dejus16
        igrsBANNED
        steam_germany18
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