Great review Gomez ... about this, "it was the
Post# of 96879
about this, "it was the software(Patent Pending) Math Model that made the games so popular"
It was a while ago but I do believe A. Hightower made a comment something to the effect of but not verbatim ... "yeah, competitors can use our math model, but they will owe NTGL a lot of money."
They are very confident and proud of their math model and it surely did seem at G2E that on-lookers were impressed!