The mechanics of Rainbow Riches slot machines are easy to understand. When you push the space bar, a ball drops from above and lands in one of eight slots. If you hit the corresponding slot, you win a prize. If you hit all the slots, you win big!

There are many slot machines available in casinos, but Book of Ra is the most popular. It contains three symbols, Adjectives and Good Luck, that are different from the normal coins you'd see in slot machines. These are electronic coins that spin on the reels.

Finn and The Swirly Spinner, an interactive slot machine, can easily be mistaken for a Christmas tree. It looks great. It is also one of the most popular and entertaining spin-offs of the classic Finn and the Firefly series. It's almost identical in storyline and premise to the original game, and does a good job keeping old fans entertained....