Papyrus Design Group, Inc. was a computer game developer founded in 1987 by David Kaemmer and CEO Omar Khudari. Based in Watertown, MA, it is best known for its series of realistic sim racing games based on the NASCAR and IndyCar leagues, as well as the unique Grand Prix Legends. Papyrus was acquired by Sierra On-Line in late 1995 and Omar Khudari left Papyrus soon after that. Dave Kaemmer left Papyrus in late 2002, just before the release of NASCAR Racing 2003 Season. On June 5, 2003, PWF Project Wildfire announced that many of their members would be joining a new group called FIRST.

At the end of the first quarter of 2004, NR2003 was pulled from the shelves due to license expiration. This is when FIRST later to become iRacing started its acquisition of the NR2003 code from Vivendi Universal. On May 28, 2004 Vivendi and Papyrus sold copyrights to FIRST.net, LLC who became the registered owner of the copyrights for NASCAR Racing 2003 Season.