LexOccultum

From website:

Load your flintlocks, light up the lantern and step into the crypt: this is LexOccultum! Awarded “Game of the Year” in Sweden, the roleplaying game about occultism, mysteries and secret societies in an 18th century setting is here! (Previously known as Götterdämmerung.)

Some would say that truth is a thin veil, like makeup upon a scarred face, silk clothes upon a tormented body, pretty words on a sickly longing, or perfume upon rotten flesh. Truth is not more accurate or more deceptive than anything else. It just is.

There are many “truths” about the darkness and the occult. Countless prophecies, texts and tomes about the unreal and the bizarre that pierce through reality and leave dismembered souls and withering minds in their wake. However, there are few insights that cover it all, and the certainty can always be questioned. Often they are a small part of a great mystery, or a conspiracy in a greater context.

Shrouded in darkness and buried for a thousand years in lies, the “truths” come through from time to time. Facts, built upon dogmas, institutions, science, rituals, covens, only God knows what. The fundamental principles that are considered so true, that the bare thought of them being exposed would bring down dooms of death.
Conspiracies are boiling beneath the surface, the covens gather in dark rooms, knowledge switches owners and occultists dig deep into the mysteries to uncover the secrets.

This is the twilight of the gods – welcome to LexOccultum, an 18th century horror, mystery and occult role-playing game.

Brief user translation and summary:
The 18th century was a time of enlightenment, but it was also a dark and strange time, full of mysterious happenings no one ever talked about. Götterdämmerung is the role playing game that reveals the truth.

Full blurp from publisher (in swedish):
Visst var 1700-talet en upplysningens tid, men det var också en mörk och underlig tid full av mystiska händelser som man aldrig talade om. Götterdämmerung är rollspelet som avslöjar sanningen.

De hemliga ordnarna har större makt än både kyrkan, vetenskapsmännen och filosoferna. Det onaturliga kryper närmare och inte ens de som bor i städerna är skyddade längre. Stadsmakten gör allt de kan för att sopa igen spåren för att befolkningen inte skall få panik. Man förklarar det mystiska och bestialiska med sinnesförvirrade enslingar, eller på hemliga sällskap som sägs vinna på att skapa kaos och oordning. Det viskas om alkemister som löst livets gåta, om varulvar, vampyrer och dunkla makter som slåss om herraväldet på jorden.

Gillar Du mysterier, hemliga sällskap, ockulta platser och mytomspunna varelser i 1700-talsmiljö? Då är Götterdämmerung ett rollspel för dig.

Götterdämmerung is the german word for the apocalypse of scandinavian myth (Ragnarök), or Twilight of the Gods in a direct translation. It is also the name of the last part in "The Ring of the Nibelung", an opera cycle in four parts by Richard Wagner.