In my childhood, I played an adventure game 'Mystery House', which was released from MicroCabin 1982 in Japan for MZ-2200. This game drew all objects by green wire frame. I explored unknown computer world and was so excited! However, it is a little troublesome to type all command from keyboard.
In 1999, I used Sharp Zaurus, touch panel PDA of Japan, and want to develop a game with touch panel UI. I came up with Mystery house like game 'Mystery Home'. This game looks like Mystery House, however, refine user interface by touch panel and implement original tricks. Then I ported it to Android as Mysterious Mansion.