Cthulhu Mythos
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Basic Information

The Cthulhu Mythos is a shared universe created by H.P. Lovecraft and used by many other writers. It forms the basis of the Call of Cthulhu RPG (as well as the Delta Green setting).

Tropes:

Common tropes of the Cthulhu Mythos include:

The Big Bads:

Great Old Ones, Outer Gods, Eldritch Abominations, Titans, whatever you choose to call them, these are the horrific things behind most of the cosmic nastiness…

That list is far from complete - the Mythos is packed full of ancient horrors and alien gods. There's a more extensive list at Interpretatio Cthulhiana - Deities

While human, Abdul Alhazred could certainly be seen as a big bad as well, because his Necronomicon has undermined the sanity of quite a few characters.

Some of the later writers - notably Lumley and Derleth - played up the role of the Elder Gods as a counter force to the Great Old Ones and Outer Gods. This changes the tone of the mythos substantially, removing some of the bleakness and futility that it originally entailed and creating the prospect of something other than tactical victories. This is not entirely popular with mythos purists - who can often be heard to grumble at the sight of investigators waving Elder Signs like vampire hunters with crucifixes, but it does make for a more gamable universe.

See Also

Sources

Bibliography
6. RPG: Trail of Cthulhu has some of the most interesting takes on the outer gods and great old ones.

Game and Story Use

  • As Call of Cthulhu is one of the oldest and influential RPGs out there, it has had an enormous impact on gaming. Elements of the Cthulhu Mythos frequently seep into other settings, especially when Cosmic Horror elements are introduced.
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