History will remember Passage as the first game that made people cry. Between, a finalist at this year's Independent Games Festival, is a game that shows beauty can be collaborative and anonymous. Rohrer's most recent game is called Primrose. It's a tile-based puzzle game designed for the iPhone (available now in the App Store). IGN recently spoke with Rohrer about his work on Primrose, his personal approach to game design, and how games can come to transcend entertainment. Here's what he had to say.