[5] DikuMUD was created by the University of Copenhagen's Department of Computer Science among a group of student friends: Katja Nyboe, Tom Madsen, Hans Henrik Staerfeldt, Michael Seifert, and Sebastian Hammer.
[7] The first DikuMUD was in working development as early as October 1990 and officially opened publicly running at freja.diku.dk port 4000 on February 3, 1991.
[13] It has been proposed by Raph Koster (lead designer of Ultima Online and chief creative officer of EverQuest II) that Diku has resulted in the greatest proliferation of gameworlds due to being the easiest to set up and use.
[17] There was a minor controversy in late 1999 and early 2000 regarding whether the commercial MMORPG EverQuest, developed by Verant Interactive, had derived its code from DikuMUD.
Some attendees had understood it to mean the former, given that the chief designer, Brad McQuaid was an avid player of SojournMUD and TorilMUD that was based on the Sequent DikuMUD derivative, and reported to that effect on Usenet.
[19] After the Diku group requested clarification, Verant issued a sworn statement on March 17, 2000 that EverQuest was not based on DikuMUD source code, and was built from the ground up.