1988 · ソースブック（プレイを拡張するルール／オプション）
Howling Wilderness
A sourcebook for a post-war United States in the Twilight: 2000 setting. It covers events before and after the attack, future history through May 2001, and changing weather patterns. It details Civgov, Milgov, and New America, including their territories and available military forces, and includes maps of major nuclear strikes. State-by-state entries describe local conditions and the effects of the altered climate. A bonus city-building resource provides more than 100 geomorphic map sections for assembling towns, villages, and fortified positions.
- 複雑さ
- 4 / 5
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（パーセンタイル）
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。