Cataclysm: Dark Days Ahead

Cataclysm: Dark Days Ahead is a roguelike open-world survival craft CRPG. It takes place in a dystopian eastern U.S. in the aftermath of a worldwide apocalypse brought about by zombie outbreak, dimensional invasion and biological infestation. The game is quasi-turn-based, in the same manner as games like Dwarf Fortress, and features a pure skill-based character system in the mould of games like Fallout or GURPS.

Started in early 2013, CDDA is a fork of Cataclysm (2010), whose developer, Whales, released the game’s source code under open-source license in 2010 and ceased development of the game in 2012. Coordinated by Kevin Granade after a successful Kickstarter campaign to fund full-time development of the game for a time, the game continues to be developed under open-source license by an active development community.