Mortville Manor is a point-and-click adventure game developed and published by Lankhor

Lankhor

Lankhor was a French video game company, notable for producing Mortville Manor, the first video game to feature speech synthesis during gameplay....

 in 1987 on Atari ST

Atari ST

The Atari ST is a home/personal computer that was released by Atari Corporation in 1985 and commercially available from that summer into the early 1990s. The "ST" officially stands for "Sixteen/Thirty-two", which referred to the Motorola 68000's 16-bit external bus and 32-bit internals...

. There were several adaptations, amongst other Amstrad CPC

Amstrad CPC

The Amstrad CPC is a series of 8-bit home computers produced by Amstrad between 1984 and 1990. It was designed to compete in the mid-1980s home computer market dominated by the Commodore 64 and the Sinclair ZX Spectrum, where it successfully established itself primarily in the United Kingdom,...

, Amiga

Amiga

The Amiga is a family of personal computers that was sold by Commodore in the 1980s and 1990s. The first model was launched in 1985 as a high-end home computer and became popular for its graphical, audio and multi-tasking abilities...

, IBM PC compatible

IBM PC compatible

IBM PC compatible computers are those generally similar to the original IBM PC, XT, and AT. Such computers used to be referred to as PC clones, or IBM clones since they almost exactly duplicated all the significant features of the PC architecture, facilitated by various manufacturers' ability to...

s. The game was released in French

French language

French is a Romance language spoken as a first language in France, the Romandy region in Switzerland, Wallonia and Brussels in Belgium, Monaco, the regions of Quebec and Acadia in Canada, and by various communities elsewhere. Second-language speakers of French are distributed throughout many parts...

, English

English language

English is a West Germanic language that arose in the Anglo-Saxon kingdoms of England and spread into what was to become south-east Scotland under the influence of the Anglian medieval kingdom of Northumbria...

 and German

German language

German is a West Germanic language, related to and classified alongside English and Dutch. With an estimated 90 – 98 million native speakers, German is one of the world's major languages and is the most widely-spoken first language in the European Union....

. Its speech synthesis

Speech synthesis

Speech synthesis is the artificial production of human speech. A computer system used for this purpose is called a speech synthesizer, and can be implemented in software or hardware...

 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

Maupiti Island (game)

Maupiti Island is a French computer game created in 1990 by Lankhor. It is a point and click adventure game similar to Mortville Manor, its predecessor...

, taking place on a tropical island.