Fallout Shelter was surprised released at E3 in 2015 on iOS, and was quickly followed up with an Android version. Three years later, Bethesda isn’t done with this mini-game just yet, as they’ve revealed PS4 and Switch editions.
In typical E3 “its’ out now!” fashion — they’re both out now. Bethesda director and executive producer Todd Howard re-iterated that it’s still going to be free despite the shift to consoles. Even with all of the updates that are piled in it gets old after a while, but I highly recommend that you at least give it a shot — especially on Switch on the go.