Doubles

Perhaps surprisingly, the Doubles online slot machine game is not a tennis-themed game, but a fruit-themed game. However, given that the developers of Doubles are the good people at Yggdrasil, this isn't your grandpop's fruit game. They have re-imagined the look and feel of it, and have delivered a sleek look as well as a fun experience that will have punters playing again and again.

Adhering to the standard, Doubles has five reels and three rows. And all the classic symbols are included here, such as lemons, oranges, cherries, watermelons, stars, horseshoes, sevens, and diamonds.

Now, here is where the innovation comes in: All of the icons also have double versions of themselves. So you can get a lemon or two lemons in the same space. This allows you to get a total of 10 on a pay line instead of the usual five.

The only feature of this slot machine is the Free Spin bonus. When at least three “free spin” double-D symbols appear on the reels, you'll enter the free spin mode. Three will get you 10 free spins, four yields 20 free spins, and five double-Ds result in a generous 40 free spins.

In addition, at the start of the free spin mode, you can pick one icon to always come up as doubles. So choose the one you like best, or the one that feels luckiest for you, and then head into the free spin round to win big!

The minimum bet per spin is .25 credits. The maximum per spin is 40 credits. All wins are awarded left to right for adjacent symbol combinations. The exception to this is the free spin scatter.