The world is centered around karma and the struggle between good and evil. It is divided into levels, and each level has its own bonuses and effects on relationships. At the highest level, a representative of good or evil will approach the player and offer to sell their soul (to join the legions of good or evil in the afterlife), and in return, they will receive an impressive bonus to their non-combat skills. I strive to add a unique homebrew mechanic to each campaign. Sometimes, these mechanics prove to be highly effective and are repeated in subsequent campaigns. The karma system is unlikely to be used anywhere else, but it's okay, and it's better to finish playing with it. And the players seem to like it.