Monument Valley uses breathtaking Escher-esque worlds and haunting music to make one of the most unique, most captivating iPhone and iPad games we've seen in a long time. So how did it come about? Lead designer Ken Wong of ustwo spoke with Cult of Mac:

"A lot of games make too much sense," Wong says. "Their makers try and emulate movies, for example — wanting to look like Star Wars or The Godfather. Games can be so much more. The titles that excite us the most here at ustwo are the ones where you get to do really strange things. It doesn't have to make sense. That's where Monument Valley came from conceptually."

Wong shared many of his sketches and his thought process for the game as well. If you like the game — and you should! — check it out.

How Monument Valley's gorgeous, Escher-like world was designed