2004 · 核心规则（开始对局的最低要求）

Snowball

A collaborative role-playing game in which a GM and one or more players create a story together. Characters are defined by Traits that indicate their importance to the narrative rather than by balanced numerical attributes. Players influence events by invoking Traits, suggesting Ideas, and gambling dice, temporarily shaping the story beyond their characters’ actions. The game supports conventional play as well as a backwards-storytelling mode that begins with the final scene and moves toward the beginning in discrete intervals.