A strange request comes to Scotland Yard. Client Gilles Willcock receives a murder notice that's bound to happen at midnight. He calls out a detective, and seven people at the mansion wait nervously for escalation. Gilles locks him up at the second floor while detective hides in waiting at the first floor. At midnight gunshots are heard on the second floor, and a murder is seen through a keyhole. When detective finds the key and enters, there is no body.
Underground Exploration is a non-graphical game where players form a party of 4-5 adventurers, fight monsters, collect treasures, and purchase weapons. The game uses text-based commands and a time-passage system.
Arguably the first RPG to be produced in Japan.
The Dragon & Princess is the first known RPG developed in Japan. It tasks the player with finding a king's stolen treasure. It is a hybrid between the RPG, adventure and strategy genres, and laid the foundations for tactical RPGs.