Core Elements
A streamlined d20-based roleplaying system that provides a basic framework for running a game or developing a custom ruleset. It can be used as written for barebones play or adapted as the foundation for a publishable game, with the rules released as Open Game Content.
スキルベース（スキルを購入または獲得）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）
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。