Laplace no Ma was first game he made and the first he made for
Group SNE. He said in an interview with that when making the game he said there was a trend of
splatter film-styled works and wanted to make a game with a more "haunted house" style. He noted that even outside Japan, there were few horror-oriented RPGs as well as tabletop ones outside of computers such as
Call of Cthulhu, but wanted to make a more original title.
Laplace no Ma was first released in July 4, 1987 for NEC
PC-88 and
PC-98 computers. It received several ports to other computers such as the
MSX and
X68000 and consoles like the
PC Engine Super CD-ROM² and
Super Famicom. All of these releases were exclusively released to the Japanese market. Scenario writer for the game Keiko Shimomura said that the first thing they wanted to do with the console versions was the lower the difficulty of the original game. While originally scheduled for August 10, 1993,
Laplace no Ma was released for the Super Famicom in Japan on July 14, 1995.
Famicom Tsūshin wrote in June 1993 that the
Super Famicom port of
Laplace no Ma was at 75% completion. Yasuda described the Super Famicom version as a complete remake of the original game. The Super Famicom version features all new maps than any previously released version. A fan translation of the Super Famicom version was released in 2001 but was removed after the translator felt it did not meet their own quality standards. A new English fan translation was released in 2018. ==Reception and legacy==