Daito Giken Koushiki Pachi-Slot Simulator - Hihouden is a conversion of the Pachi-Slot arcade machine of the same name. Hihouden (Secret Treasure) is an Egyptian themed pachislo. It follows the exploits of Leon and Sharon who are treasure hunters in Egypt. They run into all sorts of trouble before finding rooms filled with gold and other valuables. Hihouden features cool animatronics. The doors next to the LCD screen open and close and interact with what's happening on screen.

The Playstation 2 version features a perfect simulation of the machine with different camera angles and levels of zoom and also unlockables galleries (sequences, bgm, sounds, etc). There is also vs modes againts the computer.