2020 · 代替ルール（基本ルールの変種）
Cepheus Atom
A post-apocalyptic role-playing game set in savage Wastes shaped by nuclear fire, poison clouds, monstrous weapons, and genetic experimentation. Players take the roles of tribals, survivors, mutants, or other remnants of humanity, exploring a sci-fantasy world filled with sentient mutant animals and plants, deranged robots, strange mutations, and pre-Collapse artifacts. The lightweight rules support fast play, with characters using primitive weapons and advanced technology to survive encounters, uncover relics, and battle the dangers of the Wastes. Play requires the booklet, six-sided dice, and writing supplies.
ソースブック（プレイを拡張するルール／オプション）スキルベース（スキルを購入または獲得）ポイント制（ポイントを割り振ってスキルや能力を得る）ダイス（主にd6）
ゲーム情報（人数、プレイ時間、対象年齢、クレジット）の出典：BoardGameGeek。