2000 · ソースブック（プレイを拡張するルール／オプション）
Field Manual: Lyran Alliance
A sourcebook covering the Lyran Alliance during the breakdown of its alliance with House Davion and the resulting threat of civil war. It details the organization, loyalties, strengths, and weaknesses of Lyran regiments, along with special rules for using them. The book also profiles new equipment and BattleMechs produced by Steiner factories.
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）ダイス（主にd10）
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。