Mortville Manor (French: Le Manoir de Mortevielle) is a point-and-click adventure game developed and published by Lankhor in 1987 on Atari ST. There were several adaptations, amongst other Amstrad CPC, Amiga, IBM PC compatibles. The game was released in French, English and German. Its speech synthesis was a first at the time.
You are Jérôme Lange, a famous private investigator, involved in the strange events of the Mortville Manor. The game can be solved extremely quickly if you are given the solution. After a French computer magazine published a walkthrough, allowing its readers to solve the game without even having understood the plot, an altered version was published and replaced the original. This new version was completely identical except that at a specific point in the adventure, the player had to correctly answer a series of questions about the game's plot to be allowed to continue further.
Mortville Manor was followed by its sequel Maupiti Island, taking place on a tropical island.