The Grand Journeyby Microgaming

Take an epic adventure into fantasy with an Amazon bombshell, sabre tooth tigers, dinosaurs and magic mushrooms with this 30 payline video slot from Microgaming. The game is a little odd in that you don't get to choose your paylines, they are all enabled – and the coin sizes are restricted to .01 and .02. But you can bet 600 coins per spin. There is a stacked wild that can fill the middle reel for extra line wins.

The free spins feature can be exciting. With 15 free spins, each non-winning spin increases the multiplier of the next spin 1x for a max of 10x payout. Each time it pays the trail is reset to 2x and starts over.