Savage Swords of Athanor (v1.0) (2009)

From the introduction:

Athanor is part Edgar Rice Burroughs’ Barsoom, part Mike Grell’s Skartaris, and a large dash of random inspirations from film, television, comics, and books throughout my life. This is a game of swashbuckling adventure and lurking horror set in a dying post - apocalypse world.

Athanor is a game of weird fantasy and planetary romance, filled with elements of political intrigue, romance, action, terrible monsters, and ancient evil.

User note:

This is Version 1.0 of the game. The rules are mostly Swords & Wizardry; the spell list is altered, armor class is used differently, the Cleric class has been replaced by a Magic-User/Fighter flexible hybrid class, a few combat options have been added and character advancement has been changed: characters advance a level when they complete a number of adventures equal to their next level.