Theme designed machines are very popular, with everything from wildlife to a more patriotic themes. Many times, the casinos will do a whole room in a particular theme and use Hokiplay such as poker slot machines or video one, as well as any other casino game, to further compliment the theme.
There are different types of slot machines, such as the three or four reel games. Common sense tells us that lining up three matching symbols on such a machine to win, rather than having to line up four, is much easier. To match four can be very difficult, even on liberal poker machines. And of course, three sevens can be hit more frequently than four sevens on a 4 reel machine. If possible, try to play on three reel machines.
Most slot machines have the center line as the pay-line and only the correct combinations on that line will pay. However, such a machine may have the 3 pay-lines in the center, bottom and top of the window, so that means that any correctly lined combination on any one of those 3 pay-lines will win. There is an advantage to playing the 3 paying games, as you are given extra chances to win and can get up to triple payouts if they are in the correct order and show on more than just the one pay-line.