BioSyndrome is a community created game of zombie survival horror.
Come With Me If You Want To Live is a tongue-in-cheek board/card game in which players try to gather the most followers to save from the apocalypse.
Earth Delta is a sci-fi RPG trying to capture an old-style vibe. The author has some interesting design goals:
Before we launch into any actual rules, it’s probably a good idea to clearly state some design goals. The goals of Earth Delta are:
Capture the spirit of old-style Gamma World, especially the first and second editions, and of the sources which inspired it or which seemed to draw inspiration from it: Hiero’s Journey, Heinlein’s Orphans Of The Sky, Metamorphosis Alpha, Kamandi, Thundarr, Wasteland, Fallout, and anything else with mutants and mayhem.
Create a game which is balanced and playable. This isn’t a beer-and-pretzels game (though it can be) or one where you create “wacky” throwaway characters. Nor is it one where random luck determines if you’re useful. One of the Unchanged is just as powerful as a winged grizzly bear with laser eyes.
Allow for the playing of winged grizzly bears with laser eyes.
Be balanced with standard 4e rules, so there’s minimal work involved in taking creatures, or characters, from this game into D&D.
The World Of Gainar is a massive work — a complete RPG system set in a post-apocalypse fantasy world. This is no Gamma World, however. From my reading, it seems to be more of a traditional fantasy — with dwarves and elves (fey), swords and shields, but also with gunpowder and steam tech. For those who just want the background, there’s a stripped down version that’s just the world book.
Fallout Warfare is a set of miniatures rules for playing games set in the universe of the acclaimed Fallout computer game.