Fallout Shelter

A Fallout spin-off for the iPhone is a hypothetical title that Bethesda Softworks could make in the future. According to Bethesda's Todd Howard, several early designs have been pitched and rejected.

Quotes
"I think that the world of Fallout is unique enough that it could work on any platform. I think some of the things we do like VATS, I think that could translate to any platform, particularly the iPhone," Todd Howard told us yesterday. "We've looked into those things, we just haven't found the thing that supports the brand well. I wouldn't be surprised if it does happen one day. The iPhone versions that we've designed and said 'Ehh, we don't think we're going to do that right now,' there are ... there are a lot of them."