1992 · ソースブック（プレイを拡張するルール／オプション）
ComStar Sourcebook
This sourcebook details ComStar, the organization that controls interstellar communications and preserves advanced technology across the Inner Sphere. It covers ComStar’s history, its role in stopping the Clan invasion, and the events that divide it into the new ComStar order and the Word of Blake. The book also introduces BattleMechs used by both factions and includes an eight-page color section featuring uniforms, insignia, and equipment.
スキルベース（スキルを購入または獲得）ダイス（主にd6）属性／ステータス制（STR、CON、PERなど）
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。