The development of Pac-Land (arcade) was stopped for 2 months because the hardware was changed in between. Between version A and version B of Pac-Land, the developers had some free time and Namco had started to develop for MSX. Kishimoto chose to make a port of Mappy, alone, in one month. He presented the project to Namco when it was finished. The game sold very well in Japan (for a MSX game), was number one in MSX games sales for 3 months with about 20,000 copies per month for a total of about 100,000 copies.

The game doesn't use a real scrolling, Kishimoto redesigned all the parts of the backgrounds by shifting each of them by 4 pixels.

Program: Yoshihiro Kishimoto