The original Ultimate Survivor is about a giant disease spreading through earth. Rated T and only on the Super Gamer.
Ultimate Survivor: Zombie Apocalypse
The second game, released for the Wii U and Super Gamer, is all about a zombie invasion. Rated M.
Ultimate Survivor: Alien Invasion
The third game for the Wii U and Super Gamer. It takes place in an alien invasion. Rated M.