Best known as the creator of the roleplaying game Vampire: The Masquerade and its associated World of Darkness games, including Werewolf: The Apocalypse, Changeling: The Dreaming and Wraith: The Oblivion. Rein•Hagen is also one of the original two designers of Ars Magica along with Jonathan Tweet. A TV show (Kindred: The Embraced) based on Vampire was produced by Aaron Spelling and shown on Fox TV with Rein•Hagen serving as a writer and producer, but was cancelled after nine episodes; despite word of a revival, its star Mark Frankel died in a motorcycle accident, ending such talk. A founder and owner of White Wolf Game Studio, in 2007 he sold his half of the company and left the gaming field.
As a side project independent of White Wolf Game Studio, Rein•Hagen founded Atomoton Games and created Z-G, the first collectible action figure game. Despite the high production value and plans for numerous tie-ins, the game failed to find a market and sank the company.
When asked about the meaning and pronunciation of the dot in his last name, Rein•Hagen once reportedly replied, "It's unpronounceable, and symbolizes how meaningless are the labels that we attach …
