From the back of the book:
Before the dawn of recorded history, our world was a primeval landscape dotted with pockets of civilization; kingdoms, nations, and city-states surrounded by a vast and unforgiving wilderness teaming with danger and littered with the fallen ruins of an ancient empire of mighty sorcerer-lords and the remnants of older, darker civilizations.
Based on David Black’s game-changing The Black Hack, By This Axe I Hack takes its cues from Robert E. Howard’s Conan the Barbarian and Kull of Atlantis, Roy Thomas and Barry Windsor Smith’s Red Sonja, Michael Moorcock’s Elric of Melnibone, and Fritz Leiber’s Fafhrd and the Gray Mouser.
By This Axe I Hack includes 18 unique Character Classes (6 warriors, 6 rogues, and 6 magicians), a magic system with 120 spells tailored to the sword and sorcery genre, over 70 special features to customize your Characters, rules for modifying existing Character Classes or creating your own, a huge assortment of men and monsters to throw at your Players, a number of optional rules to help you fine tune the game to exactly your liking, and a variety of random tables to help Gamemasters create their own Lost Age.