Jonathan Tweet

Jonathan Tweet (born 1965) is an American game designer from Rock Island, Illinois who has been involved in the development of the role-playing games Ars Magica, Everway, Over the Edge, Talislanta, the third edition of Dungeons & Dragons and 13th Age, and the Collectible Miniatures Game Dreamblade. He and Mark Rein-Hagen formed Lion Rampant Games in 1987 and co-designed Ars Magica, but Tweet left the company in 1989 before its merger with White Wolf Magazine. He was lead designer for Dungeons & Dragons Third Edition, which became the basis of the d20 system.

Tweet is also the author of Grandmother Fish, a children's book that explains evolution to preschoolers.

Acknowledgements

 * 2003: GW: Gamma World Player's Handbook
 * 2003: GW: Machines and Mutants
 * 2003: GW: Out of the Vaults
 * 2004: GW: Gamma World Game Master's Guide
 * 2004: GW: Cryptic Alliances & Unknown Enemies
 * 2004: GW: Beyond the Horizon

Ars Magica Creator

 * 1990: ArM: The Order of Hermes

Author

 * 1990: ArM: The Order of Hermes

Credit Where It's Due

 * 1997: MTAs: Order of Hermes Tradition Book

Special Thanks

 * 1990: ArM: The Order of Hermes - Jonathan "What do you mean the disk I sent you was blank" Tweet, for putting together and excellent manuscript and finishing a product that was on the drawing board for two years.


 * 2005: IH: Monte Cook Presents: Iron Heroes