2007 · ソースブック（プレイを拡張するルール／オプション）
Rule Supplement 1: Mounted Combat
A rules supplement for the d20 System covering mounts and mounted combat. It details flying, burrowing, climbing, swimming, large, small, and intelligent mounts, as well as multiple riders, riding platforms, cavalry maneuvers, warpacks, and contest jousting. The book also expands the Handle Animal and Ride skills, adds new equipment and skill uses, and includes more than 50 feats.
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）
無料・Web、Android、iOS対応
LudoyaでRule Supplement 1: Mounted Combat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。