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Game · RPG

Cataclysm: Dark Days Ahead

A turn-based survival game set in a post-apocalyptic world.

  • Completely free
  • Windows and Linux
  • Open source

Overview

Cataclysm: Dark Days Ahead is a survival game, available on Windows and Linux. Related genres: role-playing game.

Gameplay elements described in its Flathub listing, in its GitHub repository and on its official website: turn-based play and procedurally generated levels.

Overview written by LicitPro from the documentation published by the authors and the cited sources; we have not tried the resource ourselves.

Excerpts that establish this information
  • “Official homepage of Cataclysm: Dark Days Ahead open source turn-based survival RPG development project.” — official website, 10 November 2026
  • “Official homepage of Cataclysm: Dark Days Ahead open source turn-based survival RPG development project.” — official website, 10 November 2026
  • “Official homepage of Cataclysm: Dark Days Ahead open source turn-based survival RPG development project.” — official website, 10 November 2026
  • “Struggle to survive in a harsh, persistent, procedurally generated world.” — GitHub, 10 November 2026

At a glance

All of Cataclysm: Dark Days Ahead is free: no feature is locked behind a paid plan, and its code is open.

Its content is under a Creative Commons licence (CC-BY-SA-3.0): check the attribution requirement and any non-commercial restriction.

Strengths

  • Open source code
  • Commercial use allowed

About

Struggle to survive in a harsh, persistent, procedurally generated world. Scavenge the remnants of a dead civilization for food, equipment, or, if you are lucky, a vehicle with a full tank of gas to get you the hell out of Dodge. Fight to defeat or escape from a wide variety of powerful monstrosities, from zombies to giant insects to killer robots and things far stranger and deadlier, and against the others like yourself, that want what you have... As your game begins, you awaken with hazy memories of violence and terror from when the world suddenly unraveled around you. Now you need to explore your surroundings, and secure food, water and safety. After that, who knows? Long term survival will mean tapping abilities you haven’t used before, learning to survive in this new environment and developing new skills.

Description from Flathub — AppStream (Flathub)

Sources and checks

  • Facts collected from Flathub (credit card, source code, publisher, licence, free status, platforms, commercial use, version) —
  • Facts collected from Unspecified source (platforms) —
  • Facts collected from Winget (Windows Package Manager) (source code, publisher, platforms, version) —
  • Last technical check: 7 November 2026
  • Description from Flathub — AppStream (Flathub)

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