Dude, it's an APPLICATION, nott an issued patent. It is nothing butt a published APPLICATION, as all US patent applications now are (with only a very few exceptions).
There is no ISSUED nor ALLOWED nor GRANTED patent.
US and almost all foreign APPLICATIONS are PUBLISHED (nott granted or issued or allowed) 18 months after the priority date - AUTOMATICALLY!
HTH.
While IGT and several others have ISSUED patents on advantage play. DOMINANT patents - that cover advantage play in pinball and arcade-type video games - and to which NTGL does not even have a license for!
Those are ISSUED patents to IGT and others. NTGL has none.
Nor a license to those ISSUED third-party dominant patents.