What are the best pay once and play forever-games for iOS?

With the Steampunk motif and the way that the game transitions, users can see that a lot of style and imagination was used in the creation of the game. Being that it is based off of Jules Verne's novel "Around the World in 80 Days", fans of the author should find a lot to like here and those new to the author should be able to find something they like being that it is an established classic.