In my opinion WMS BB1 and BB2 games are very entertaining and easy to find. The only caveat is like your older fashioned games, you can typically only have one game loaded in the machine at once, there are multi-game themes that allow for 6 games to be in the system at once and you select from a menu, but there about only 8 I believe of such game sets. Most of the time you will clear, load and setup a particular game and play that until you want to move to the next one, similar to what you do with you stepper games. The newer IGT platform IGT AVP, when retrofitted with a specific show bios, will allow you to simultaneously load a bunch of games, typically 50 or even 60, depending on how much memory each games uses and can be selected by menu. They also have a multi-level display option which allows for some games that were designed to emulate a 3D type effect my moving the image from the lower layered LCD to the top layer LCD, these are called MLD displays (Multi Level Display), IGT calls it Reel Depth. They use the technology to also emulate steppers by having the "reels" be on the bottom layer and the typical slot glass in the top layer, the effect is quite good if you have ever seen it. Personally I find the WMS games to be much more entertaining to play than what IGT has to offer, but it sure is nice to have a machine with 50 to 60 games loaded at once.