2003 · キャンペーン設定（ゲーム世界）

D20 Omega World/GammaWorld: Master's of the Earth Campaign Setting

Set approximately 200 years after the Black Days, this d20 campaign setting explores a devastated future shaped by plagues, wars, and the collapse of modern civilization. It adapts and revises material for post-apocalyptic play, with characters traveling through the ruined lands, encountering surviving communities, strange mutations, and remnants of the age of man.