On the trail of Cthulhu

Start the adventure and get acquainted with the Main Rulebook.

On the Trail of Cthulhu is a role-playing game based on the universe of H.P. Lovecraft, a well-known writer of horror and fantasy. In the game, participants take on the roles of detectives investigating strange and disturbing events that may be connected to unknown forces and powerful beings called Cthulhu.

The game is based on the d20 system, which means that most decisions and interactions with the environment rely on rolls of a 20-sided die. Players must also manage their characters, developing their skills and acquiring new items to better cope with the challenges the game presents.

The universe of On the Trail of Cthulhu is full of dark mysteries and dangers, and players must deal with both physical and mental threats as they try to solve puzzles and understand the mystery of Cthulhu. The game is known for its unsettling and dark atmosphere as well as unpredictable endings that often leave players with more questions than answers.

On the Trail of Cthulhu is a game for the brave and those seeking new experiences who want to step into the dark and mysterious world of H.P. Lovecraft and try to solve its mysterious puzzles.