With the background, the slot's overall design can be summed up as grand. Mountains, woods, and mist may be seen in the background, hiding the reels. Train tracks with various train carts on them may be seen up front. The fanciful characters on these carts, which have a steampunk-like aesthetic, serve as the symbols on the reels. Currently the music is light-hearted and cheerful to induce relaxation. You'll hear the sound of the trains as well as various background noises that just blend in perfectly to create a full ambiance while the wheel rotates.

The train carriage wild symbol can be used in place of any other symbol other than the scatter. Combining 3, 4, or 5 will pay out 2, 8, or 30 times your entire bet, respectively. There is a Wild Trains feature in Wild Rails. This is activated at random. Each of the four rows may be taken over by up to four wild trains, which each add up to five additional wilds.

The Free Spins feature is the major draw. When you acquire three or more golden train scatters, this is activated. You'll receive 5, 7 or 10 free spins if you land on 3, 4, or 5. As the free spins begin, 1 guaranteed Wild Train will show up on each one, and the scatter will behave as a wild. With up to 4 Scatters occurring on each free spin, collecting them will boost the number of Wild Trains that are guaranteed to appear. A new Wild Train will show up after collecting 3 scatters. Every time you get to the second and third Wild Train, you will receive a free spin. You will receive three additional free spins, bringing your total possible to 15 if you make it to the fourth and final Wild Train.

The Wild Rails slot machine is a typical Play 'n GO title that has great visuals. With maximum wins of 5,000 times your wager, it has a significant variance. Having said that, by covering all of the reels in wilds, you can earn up to 900 times your wager on each spin or free play.