Well, the "game" is an interactive audio adventure, so don't be too surprised.

Simon & Schuster imprint Atria Books has inked a three-book deal with Realtime Associates' F.J. Lennon for a series of novels based on his his iPhone title Soul Trapper: Episode 1.

In the three-hour game, reports game site GameSetWatch, players are a drifter who carries an Soul Trap device to trap, interrogate and free ghosts across Los Angeles via Choose Your Own Adventure style play.

Soul Trapper sold around 25,000 copies since its release last fall. Talent agency CAA has even been pitching a Soul Trapper script to the major studios — it's apparently a "darker, edgier Ghostbusters." So... it's not funny?

Soul Trapper [Publishers Weekly via GameSetWatch]