Seoul National University, Bachelor in Computer Engineering (1990)KAIST, Master of Computer Science (1992)KAIST (Korea Advanced Institutions of Science and Technology), Doctoral Course in Computer Science (1992-1993)Developed &＃39;Jurassic Park&＃39; MUD game (1994)Co-founded &＃39;Nexon&＃39; (1994)Developed and commercialized &＃39;Kingdom of the Wind&＃39;, world&＃39;s first MMORPG (1995~1996)Joined &＃39;PSINet (former iNet)&＃39; to lead the Internet Game Development Team and commence development of &＃39;Lineage&＃39; (1996)Joined &＃39;NCsoft Corp.&＃39; (1997)Senior Executive Vice President, Head of Worldwide Development (2000~2003)Founded &＃39;XLGames, Inc.&＃39; (2003)Development in Progress &＃39;XL1&＃39;, &＃39;MMORPG&＃39