Board Thread:News and Announcements/@comment-1633483-20151107174702/@comment-47205-20151115092305

The Class scale was an old method of classifying empires that existed as an alternative to the Tier scale. There were quite a few differences, and essentially all but one - Classes counted up so 0 was no technology, while Tiers counted down so 0 includes everything above some level - were merged into the Tier scale making the Class scale essentially redundant.