2008 · ソースブック（プレイを拡張するルール／オプション）
Technical Readout: 3085
Set during the aftermath of the Jihad and the founding of the Republic of the Sphere, this reference book details the machines rebuilding the Inner Sphere’s shattered armies. It presents new ’Mechs, battle armor, aerospace fighters, vehicles, support vehicles, and variants introduced during the late Jihad and early Republic era. The book also includes updated material on the original Project Phoenix designs, fifty-six conventional infantry formations, and the return of Land-Air BattleMechs, with profiles of the original four models and their Star League history.
スキルベース（スキルを購入または獲得）ポイント制（ポイントを割り振ってスキルや能力を得る）ダイス（主にd6）
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。