SpearMPixSod is a map set for Spear of Destiny, made by Maarten Pinxten and his brother, Roel. The maps were made in 1998 but were only released in full on June 22, 2002 after being posted on the Wolfenstein 3D Dome.
The map set features 21 levels.
An earlier release, MPSod, also known as MP's Spear of Destiny Add-on, dates from August 31, 1999 and only credits Maarten. This particular release features only 11 new levels (1-10 and 19) and was originally uploaded on Maarten's own site.
It is playable in SDL as it is only a map set.