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.
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rules are mostly Swords & Wizardry; the spell list is altered, armor class is used differently, the Cleric class has been replaced by a Magic-User/Fighter flexible hybrid class, a few combat options have been added and character advancement has been changed: characters advance a level when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.