Lars Pensjö of Sweden is the original author of the LPMud MUD engine and the LPC programming language, and is one of the founders of Genesis LPMud, notable for their part in the history of MMORPGs as well as the Pike programming language. He attended Chalmers University of Technology in Gothenburg, Sweden, from 1980 to 1984. He was a member of the as of 2008 defunct Chalmers Datorförening ("CD"), after which the CD gamedriver and mudlib were named.