Board Thread:Game Discussion/@comment-5012038-20130518014717/@comment-10820939-20130520224053

It is all based on points I believe. I have not found a lvl 6 myself, but was asked to help out on quite a few of them now. I believe from personal experience that the game randomly selects you to help out people that are roughly the same ranking as you are. I am about 1500 now and the level 6s are showing up pretty often.