I’m going to stick with the original Spanish title for this 1987 release by Opera Soft. The English translation being: “The Abbey of Crime“.

La Abadía del Crimen is an isometric adventure loosely based on the novel The Name of the Rose by Umberto Eco and follows the exploits of Friar William and his assistant Adso as they investigate a series of murders in a medieval Italian abbey.

As is explained to you at the start of the game, Friar William – who you are playing – must obey the rules of the abbot and the monastery, which means: turning up to religious services, attending offices and meals, and also not leaving your room at night. Your assistant, Adso, reminds you of these and will even lead the way if you don’t know where to go. Solving the mystery while obeying these rules is another thing entirely…

As far as I’m aware La Abadía del Crimen was available only for ZX Spectrums with 128K of RAM. This is no surprise considering the size and complexity of the game. In terms of map size, Artificial Intelligence, plotting, graphics and sound it is an ambitious piece of 8-bit coding.

See also: the original Amstrad CPC version

More: La Abadía del Crimen on Wikipedia