As you'll probably already know, developer NimbleBit has just released Pocket Planes. What you may not know, though, is that Pocket Planes was almost Pocket Trains.
"[T]he reason we switched to planes was because having to travel along the rail routes felt really limiting, kind of went against the feeling of open exploration and travel we were going for," David Marsh, one of the game's designers, said.
If the three screenshots below this article are to be believed, NimbleBit was pretty far ahead in the development process when it decided to switch transport.
Pocket Planes flew its way to a Pocket Gamer Gold Award at review, though, so it was probably a good move on the developer's part.
Something Awful Forums [via PocketTactics]