2015 · ソースブック（プレイを拡張するルール／オプション）
Thunder Lizards
This OSR supplement presents six iconic dinosaur species, including the tyrannosaurus, triceratops, raptor, ankylosaurus, supersaurus, and stegosaurus, with game statistics, descriptive information, and artwork. The included profiles can also represent related species, while optional fantastic abilities add threats such as fire breath, regeneration, and electrical attacks. A Hunter character class tracks and kills prey, then fashions weapons, armor, and other equipment from its carcasses. At higher levels, the Hunter can mimic the powers of a trophy. The material is compatible with OSR d20-based games, including White Star and Swords & Wizardry.
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）レベル制（XPを獲得してレベルアップ）
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。