Ported from Lucasfilm Game's Commodore 64 version with various discrepancies.
The package warns it does not run on YIS-805 (128, 256K) though in reality it does on YIS-805 128. The warning might pertain to the inability of the YIS-805's standard SFG-05 sound module to play MSX AUDIO sound .
One of its MSX AUDIO music dump is available as part of an interview on MSX Magazine 1987 12 page 107-108.
Based on Labyrinth the movie. The title screen says Labyrinth and many sources cite so, however the official designation by Lucasfilm Games is Labyrinth: The Computer Game. The package displays "The Computer Game" after Labyrinth. The Japanese designation ラビリンス魔王の迷宮 (eng: Labyrinth: The Labyrinth of the Demon King) is same as the Japanese title of the movie.