Cataclysm BN
Try to survive the apocalypse
Cataclysm BN Team and Contributors ✓ Verified
org.cataclysmbn.CataclysmBNCataclysm: Bright Nights is a roguelike with sci-fi elements set in a post-apocalyptic world.
While some have described it as a "zombie game", there is far more to Cataclysm than that. 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 there.
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, who want what you have.
Find a way to stop the Cataclysm ... or become one of its strongest monsters.
Cataclysm: Bright Nights is a fork of Cataclysm: Dark Days Ahead. The two forks diverged a few years ago over disagreements regarding the right direction for development to take, with BN choosing less emphasis on realism. Overall, BN has taken a more Sci-Fi approach, with robots and bionics still prominent in society.
Screenshots
Observed history
| App | Change | Version | When ↑ |
|---|---|---|---|
| updated | 0.13.0 | 2 Oct 2026 |
Upstream releases
Release notes supplied by the developer. These dates are not Flathub package publication times.
0.13.025 Sept 2026
Notable Changes
- Explore redesigned towns and cities with suburbs and alien faction outposts
- Uncover new secrets and rewards in the redesigned Central Lab
- Explore commercial airports with full-size aircraft
- Choose melee techniques manually, grab and throw smaller enemies, and opt into crowd crush
- Customize power armor with separate exoskeletons and tiered armor plating
- Jump over obstacles and crash through windows
- Inflict bleeding on flesh-based monsters with cutting and ballistic attacks
0.12.030 May 2026
Notable Changes
- Map overhaul with code support for exploring new dimensions
- Multiple performance refactors
- Expanded variety of laboratory finales, smaller yet denser lab generation
- New vehicles such as jets and harriers, Tankmod tanks and artillery now part of vanilla
- Vehicle, terrain, and item palettes; vehicles spawn in a variety of colors and can be repainted
- Shotguns fire multiple pellets that can hit multiple targets
- Monsters with weapons can now be disarmed
- Ability to assign crafting tasks to companion NPCs from dialogue or crafting menus
- Rest of the changes can be found in the github repo
0.11.116 Mar 2026
Notable Changes
- Added fluid grids with tanks, sinks, transformers, and rain collectors for base water networks
- Improved performance in heavy worlds with monster AI and turn-processing optimizations
- Added tintable overlays, split hair color and style traits, and more expressive tileset support
- Added new overmap content including fire lookout towers, drive-ins, hunting lodges, and lighthouse variants
- Added tool-quality crafting speed modifiers and made crafting in item-heavy areas much faster
- Expanded Lua with new hooks, widgets, menu actions, and overmap special generation support
- Rest of the changes can be found in the github repo
0.10.07 Feb 2026
Notable Changes
- Added the ability to select bionics in character creation
- Implemented framework for multi-tier mutation thresholds
- Expanded list of swords Niten Ichi Ryu can use
- Ice labs spawn naturally again
- Added a lesser version of the Brawler trait that only bans guns known as Gunshy
- Added nyctophobia (fear of the dark) trait
- Rest of the changes can be found in the github repo