Planet Mother****er

From the introduction:

Planet Motherfucker is an alternate-reality Earth where the worst fears of the Cold War came to pass in 1965 - the Year of the Thunderkiss.Some fat-fingered bureaucrat pressed the shiny red button and set off Armageddon. However, instead of resulting in a grim, gritty wasteland where humanity struggles to survive, the atomic fallout warped the fabric of reality itself. Planet Motherfucker has been twisted into a psychoholic grindhouse world where giant ratmen drag race hot rods against murder-minded robots, where lunatic wolfmans square off against brickhouse amazons, and where living dead girls, doom nuns, and Murican witches command the awesome powers of the bump-n-grind occult.