The Prison Boys is a captivating mystery novel and escape-game for iPhone users. Set in the end of the Taisho era, the game follows the main character, Tetsu Akatsuki, as he witnesses an incident in the 12-Story Prison, a hub of the Secret Police. As Tetsu gets closer to the truth, he discovers that the dark secrets of the prison run deep. With a focus on justice and friendship, players must solve mysteries alongside their partner, Nagi, putting their lives at risk.

This unique game combines the elements of an escape-room adventure with a compelling story. Players must listen to people's stories, find keys and items, and rely on their own deductions to solve problems. The game offers a new genre that blends the features of escape games and novels, allowing players to enjoy both the story and problem-solving aspects. With an easy-to-play interface and automatic data saving, anyone can freely enjoy this captivating mystery novel adventure.