Scion is a series of role-playing games published by White Wolf, Inc. The first core rule book, Scion: Hero. was released on April 13, 2007. The second volume, Scion: Demigod, was released on September 12, 2007, and the third, Scion: God, was released on January 23, 2008. The Scion Companion began release in sections March 2008, as a PDF direct download. Scion: Ragnarok was released on January 21, 2009. Scion is a role-playing game wherein players take on the roles of mortal descendants of gods embroiled in a divine war between the gods and their ancestors, the Titans: powerful, primordial embodiments of concepts such as water, chaos or light which recently escaped after thousands of years of imprisonment in Tartarus. The pantheons presented draw from mythology giving players the ability to associate their characters with any of the six pantheons provided in the game.

Scion uses a rules system similar to the Storyteller system made popular by the World of Darkness, but is not part of the World of Darkness. The rules are a new version of the system presented in Exalted: Second Edition but set in a modern world, that also includes elements from the Trinity Universe series of games, most notably Aberrant. One change to the system that has caused some debate is the lack of Backgrounds in Scion. Characters are allowed to have whatever contacts, history, and wealth that makes sense for the character without the need of any rules to oversee them. The core mechanics of the game will also increase in scale with each additional book in the series, eventually promoting the hero characters to demigod- and god-hood.

The two primary abilities available to hero characters are Epic Attributes and Boons. Epic Attributes increase the characters nine basic abilities to super-human levels (Hercules' strength or Helen's beauty, for example). Boons are the divine powers granted to the children of the Gods, categorized into Purviews (covering animals, chaos, darkness, death, earth, fertility, fire, guardians, health, justice, the moon, psychopomp [travel], the sky, the sun, war, water, pantheon-specific purviews [Heku, Arete, Jotunblut, Itzli, Tsukumo-Gami, Cheval, Taiya, and Scire], magic, mystery, and prophecy), and activated through special relics given to the Scions by their divine parents. Scions also round out their abilities by attracting Followers, being befriended by legendary Creatures, or being aided by often mystical Guides.