Biography
Koster attended Washington College in Chestertown, Maryland, receiving a bachelor's degree in English (creative writing) and Spanish in 1992. The same year he became involved with MUDs as a developer of Worlds of Carnage, then in 1994 moved on to become implementor of LegendMUD, where he was known as Ptah. He also played MUME for a time. On May 10, 1992, he married Kristen who would later work alongside him at Origin Systems as a game designer.
In 1995, he received a Master of Fine Arts in Poetry from the University of Alabama in Tuscaloosa, Alabama, and joined Origin Systems as the lead designer of Ultima Online. Koster was also the lead designer of Ultima Online: The Second Age, Ultima Online Live, and an unannounced and cancelled title until 2000, when he joined Verant Interactive in Austin as the creative director of Star Wars Galaxies.
Promoted to chief creative officer in 2003, he relocated to Sony Online Entertainment in San Diego where he spent three years primarily responsible for business development. In March 2006, Koster left the company to work on Metaplace which, at the end, was a social gaming platform for Facebook games. Since 2013 he is an independent designer and consultant.
Koster is a charter member of the Academy of Interactive Arts and Sciences, and a member of the IGDA, ASCAP, and Omicron Delta Kappa. He is also a frequent speaker at game industry conferences such as the GDC, DICE, State of Play, and E3. He presently lives in San Diego, California with his wife and family.
In 2019, Koster and Eric Goldberg founded a new company, Playable Worlds, focused on creating an as-yet-unnamed MMORPG.
