2021 · 战役设定（游戏世界）
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.
核心规则（开始对局的最低要求）基于属性/数值（STR、CON、PER 等）等级制（获得经验值并升级）骰子（主要为 d20）
免费，支持网页、Android 和 iOS
用 Ludoya 玩 The Ruin: A Post-Apocalyptic RPG (The D20 Bare Bones Edition)
游戏信息（人数、游戏时长、年龄、制作人员）来自 BoardGameGeek。