Steam Tower is a beautifully designed steampunk-themed slot from Net Entertainment – with 5 reels and 15 paylines, it comes with expanding wilds and a free spins feature where your quest to rescue a princess from the top of the tower can lead to increasing multiplier rewards. Play from between 15p and £150 per spin.

NetEnt has created a cracking looking slot in Steam Tower – the reels include mechanical playing card values as well as the top of the tower, a princess, our hero the whiskered engineer and the eye of the monster. It has a Victorian feel which is complemented by the superbly catchy soundtrack.

The engineer’s grappling gun is the game’s standard wild, substituting for everything. The engineer himself is wild too – when he appears fully stacked on an entire reel, you’ll trigger the Free Spins feature and be awarded 10 free spins.

The aim in the feature round is to ascend the tower and in the process get rewarded with ever increasing multiplier prizes. Whenever you land the grappling gun wild, you’ll be given 2 more free spins as well as moving 1 level up the tower.

The multiplier starts at 2x on floors 1 through 3 and steadily grows the higher up the tower you make it. Reach the 16th floor summit and every winning payline you hit will be boosted by a 7x multiplier bonus. You’ll also receive a 1,000-coin bonus if you get to the top. You can keep track of how you’re doing courtesy of the Floor Meter and Multiplier Meter below the reels and the Tower Meter on the right hand side.

In terms of variance, Steam Tower is a medium volatility slot. There are some massive multiplier rewards on offer in the free spins feature but it’s rare that you’ll reach those dizzy heights. That said, the feature comes along at regular intervals so you won’t be waiting for ages to trigger it and watching your bankroll dribble away in the process.

The slots world is inundated with pirate, Egyptian, horror and sea themed slots so it’s nice to see a fresh genre on the scene. Steam Tower looks and sounds fantastic and offers a decent feature. If you’re looking for a new theme or just want to awaken your inner Fred Dibna, then certainly give Steam Tower a spin. If you want more volatility, NetEnt have plenty of options with Piggy Riches and Dead or Alive highly recommended.