Jonathan Tweet is a game designer who has been involved in the development of the role-playing games Ars Magica, Everway, Over the Edge, Talislanta and the third edition of Dungeons & Dragons, as well as the Collectible Miniatures Game Dreamblade.
Early life 
Jonathan Tweet started playing D&D in the 1970s, when his father gave him his first Dungeons & Dragons game. He briefly played with a group of college students, although he says, "but the DM killed me off... because he didn't want a twelve-year-old in his group". Tweet then formed his own gaming group by recruiting classmates.
In 1987, Tweet designed the game Ars Magica, a game centered around wizards in the Middle Ages. In 1992 he designed the game Over the Edge, which involved free-form rules and a subjective approach.
Tweet was lead designer on the third edition of Dungeons & Dragons. Tweet, Monte Cook, and Skip Williams all contributed to the 3rd edition Players Handbook, Dungeon Master's Guide, and Monster Manual, and then each designer wrote one of the books based on those contributions. On December 2, 2008 he was one of the lay offs from Wizards of the Coast.
In 2007, he was inducted into the Origins Hall of Fame.
An atheist since grade school, Tweet has devoted much of his personal website to his views on religion, in particular on the Roman Catholic Church.
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