2016 · ソースブック（プレイを拡張するルール／オプション）
The Book of Changing Years
An in-world collection of secret reports from time-traveling agents, this handout presents a series of mysteries set across history. Players investigate anomalies such as too many cats in 1840s London, Edward V’s search for a lost Caravaggio, and a prank involving Alexander Graham Bell’s telephone, while confronting psychic beetles, sentient velociraptors, and other temporal threats. The clues lead through time and space as players uncover altered events, decide what constitutes true history, and repair damaged timelines.
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。