Primus was designed for the band "Primus", which uses the layout for "Whoa Nelly". There were 100 games planned, plus 8 special editions for members of the band and individuals involved in the project. The 100 games have a silver COA on the apron with the number out of 100 on it. Special Editions have same COA but is Gold.
The above intro text acts a bit like a 'wiki' and can be edited by all Pinside members, including you!