If your machine has a bingo game on it, it's not a class 3 machine. You're playing bingo against all of the other bingo machines in the building...and that determines your win. IMO, they don't play as well as class 3 machines, which are purely random number generator. Some locations are prohibited from using class 3, but can use the bingo versions. Some locations use class 3 and bingo versions. One of our local casinos started with class 2, and eventually became eligible for class 3, but kept all of the bingo machines.
