The player's character is an entomologist named Roger Samms who lives above a filthy bar owned by Eddie Battito. Samms has embezzled a million dollars worth of grant money, and is planning to flee the country to start a better life when a bug-like locket, that belonged to his dead mother, transforms him into a cockroach.
Using a sewer system that connects the various parts of the bar, Samms must explore his environment from his new perspective, avoiding such dangers as rats and his own pet cat.
Bad Mojo was originally released in 1996 by Pulse Entertainment. In 2004, Got Game Entertainment re-released the game as Bad Mojo Redux.