
Originally Posted by
Slycer
I did a statistical analysis of hundreds of rampart entries way back when I did Salvage, I'm nearly certain that they are either flagged or not flagged to pop NMs. It's safe to say the chance of them being flagged to pop NMs is around 25% for all four (note that when MB was random, it was much higher on F1, but when they un-randomized MB, they made it equal to other floors).
Based on a large pool of data which I can link or cite on request, the chance of seeing a NM in the bottom 50% of a rampart's life if you did not see one in the first 50% of the rampart's life is approximately 17%.