Bethesda Softworks has announced Fallout Shelter, "a post-nuclear strategy and simulation experience that puts you in control of a state-of-the-art underground Vault," which according to Touch Arcade's Carter Dotson amounts to a game that's "kind of like Tiny Tower, but more post-apocalyptic":
The game has you building an underground vault in the wasteland, as you might expect. The look of the game being like the caricatures from other Fallout games is a really cool look for the whole experience, makin it feel familiar but still be a new and different experience in the franchise. You'll rescue dwellers from the wasteland, and assign them to different resource-generating buildings in the vault as the overseer, using the seven statistics from the SPECIAL set of stats from the other games: Strength, Perception, Endurance, Charisma, Intelligence, Agility, and Luck. Each character's SPECIAL will affect how good they are at generating different forms of resources, so you'll want to assign and shift them around to find the ideal stats balance.
Tiny Tower meets Fallout sounds like a lot of fun if Fallout Shelter is monetized as "friendly" as Dotson later describes it.
Fallout Shelter is available in the App Store now for both iPhone and iPad