1999 · ソースブック（プレイを拡張するルール／オプション）
Shattered Sphere
Set in early 3061, this BattleTech reference book covers the Inner Sphere after the Clan invasion, as Prince Victor Steiner-Davion returns to a region still divided by political tension and renewed conflict. It traces events from the Truce of Tukayyid through early 3062, drawing on scenario packs, sourcebooks, and novels to detail the era’s major people, places, and developments. The book also includes maps of the current Inner Sphere and Clan territories.
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。