The setting may be from the heart of the industrial revolution but the features on offer in Steam Tower are bang up to date. The base game includes Wilds which substitutes for all symbols on the reels. More intriguing though is the stacked wild (the engineer). When two of them appear simultaneously in the main game you'll be awarded with 10 free spins and more importantly, transported to the first floor.
During the Free Spins feature, you'll be awarded two more free spins whenever a Wild symbol appears anywhere on the reels. The game also move up to the next floor with bigger accumulators on offer the higher up the tower you get. For example, if you're on the first to third floor, all wins will be doubled. Wins on floors four, five and six come with a 3x multiplier. Make it to floors seven, eight and nine and a 4x multiplier is on offer. The goal is to make it all the way to the top.
Reach the 16th floor and you'll receive a 7x multiplier. If you conquer the summit you'll also be in line for a bonus win of 1,000 coins multiplied by the bet level! Once free spins end, you'll return to the bottom level and start your quest from the beginning.
You can keep track of your progress via the Floor Meter and Multiplier Meter below the reels and the Tower Meter on the right hand side. The key to a big win is hitting the free spins and then working your way up the tower and bagging those big multipliers. On the variance scale, it's in the medium range with a steady stream of smaller wins and occasional biggies.
The graphics and animation in Steam Tower are top notch. They're superbly drawn and combined with the mechanical feel of the spinning reels work like a dream. The music is memorable and perfectly matches the magical look and feel of the industrial age. Throw in a maximum payout of 2,000 times your stake and Steam Tower is a slot that would make any engineer proud. I would also recommend WMS Gaming’s Nemo’s Voyage as the bonus feature gives you bigger wins the more you progress in the feature.