Remember the days of Zork? You'd read some descriptive text about the room that you were in, then you'd move around and interact with that environment. It was all words, no three-dimensional polygons or booming surround-sound mix. Soul Trapper for the iPhone takes a long, fond look back at those times and pulls them into this century in a manner perfectly suited for the iPhone. You see, Soul Trapper is a "real-time audio adventure."