Bakuden: Unbalance Zone is a humorous game in which the player controls a nerdy, video game-playing boy who is one day visited by four strange men who tell him he must venture into a different reality. The unlikely hero is transported to the prehistoric era, where he must set things right with the local tribe and dangerous wildlife.
The game consists of non-interactive comic book-style scenes with voice-overs, as well as short, very simple adventure-like segments. During these segments the player has five icons at his disposal, each corresponding to a context-specific action. Only one of these actions can solve the problem at hand, but others trigger humorous animations and allow the player to proceed even if the result was fatal.