Cataclysm: Dark Days Ahead is an open source apocalyptic survival roguelike with the ability to craft items, scavenge, forage, fight, and build both homes and vehicles. Originally created by Zachary "Whales" Jenkins, Cataclysm built up a decent following before the project was abandoned. The community never gave up on the game - a small group of dedicated modders, hackers, and contributors kept hacking a way at the code, even knowing it was never going to be mainlined, working instead on a myriad of mods played by the few players still lingering around slowly emptying forums.
Eventually, they were contacted by a web developer with some space to spare, who was saddened by how a game with such great potential was dwindling, and saw an opportunity to truly breathe life back into the game. Darkling Wolf and Kevin Granade seized on the idea of spinning off a full-fledged branch project, as if they'd been waiting for the moment. The subtitle Dark Days Ahead was added to the end of the original name, a website was thrown together, and the word was sent out that, like the undead abominations that lurk it's street, Cataclysm was back on its feet and hungry for flesh blood.
Since then, the team of active developers has grown. A number of developers have joined the project, and, with the aid of Let's Players like jefmajor, the fanbase has increased steadily, well past it's previous highs, and things are only looking up from here. There are some great new features in the pipeline, and the game is getting better every day. Hopefully, someday soon, Cataclysm: Dark Days Ahead will be as well known the giants of the genre, like Dungeon Crawl, ADOM and Unreal World. But we can't get there alone, so if you want to contribute, there's no time to start like now.