2021 · キャンペーン設定（ゲーム世界）
The Ruin: A Post-Apocalyptic RPG (The D20 Bare Bones Edition)
A dark, gritty post-apocalyptic roleplaying game set on an Earth devastated by an invasion from another dimension. The planet was nearly destroyed in the effort to stop the invaders, leaving survivors to contend with wild animals, gangs, raiders, disease, and scarce resources rather than zombies or mutants. The game includes seven classes, rules for combat and vehicle combat, gear and weapon tables, settlement-building rules, four city guides, threat descriptions, encounter tables, and systems for surviving in the wastes.
コアルール（プレイに必要な最小限）属性／ステータス制（STR、CON、PERなど）レベル制（XPを獲得してレベルアップ）ダイス（主にd20）
無料・Web、Android、iOS対応
LudoyaでThe Ruin: A Post-Apocalyptic RPG (The D20 Bare Bones Edition)を遊ぼう
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。