pays more often in the lower ranges. There's still typically only 1 or 2 top wins. On some machines that 720,000 to 1 chance. The 2-Coin Double Diamond 800/1600 machine is a 72 stop machine, so it's 72*72*72, for 373248 different possible combinations. In the top payback there are only 2 stops on the virtual reel that pay the top jackpot, for odds of 186,624 to 1. In this particular game, pretty much as the payback goes down the number of total top jackpots goes up to 8, instead of 2.

The payback charts are usually based upon the 95% payback chip, so you don't really know where the additional hits will be as the payback goes up, but they probably won't be in extra top jackpots.

It's a handy book to have if you're trying to pick the machines to play. For the short run, you're looking for low volitility coupled with a machine that has fewer virtual stops (or more top jackpots to compensate for higher stops), and also a relatively high hit frequency and also a machine that has a high upper payback, and also has a high lower payback.

When playing in tribal casinos I avoid machines with 75% minimum paybacks, because I think that's what they use, the lowest payback chips available. There's a lot of machines that the only chips available are 85 to 90 minimums. At least you know you'll get that amount, and maybe better.