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Steam Tower is a 5 reel and 15 payline NetEnt 3d slots with a steampunk theme that offers bonuses such as free spins, stacked wilds, multipliers, and more. If you start your stakes from 15p to £150 per spin on all devices, you’ll get to compete for the maximum payout of 2,000x your stake.

The Return to Player percentage is an impressive 97.04%, and the volatility is medium, which balances out the slot nicely. Stacked wilds land throughout the base game and help trigger the Free Spins feature that can offer extra spins as you go and multipliers of up to 7x on all your winning payouts. If you join Bonanza Slots, you can play the Steam Tower slot game online or keep reading to learn more about the game.

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Steam Tower Theme and Graphics

The Steam Tower theme is impressive for a slot released in 2015. It tells the story of the 19th-century Victorian era, when the British Industrial Revolution was taking place. You can see the Victorian influence throughout the Steam Tower slot gameplay with the action taking place on a steamship and its captain on the side of the reels overlooking the spins. It will be the player’s objective to slay the dragon and save the princess from the top of the tower. The gameplay is fantastic and exciting to follow on a smartphone device where all the visuals pop.

NetEnt released their Steam Tower slot in 2015, one of the hundreds of online slots they’ve released since their launch in 1996. The company started in Växjö, Sweden but rose to become a formidable name in the online gambling industry. Today, they are considered the best slot developers globally with a collection of 200 casino slots and an average of 2 new games a month. If you enjoy steampunk-themed slots like the Steam Tower slot game, consider the following;

  • Gold Factory
  • Boom Brothers
  • Cazino Cosmos

Steam Tower Slots Gameplay

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How to Play Steam Tower Slot

Log in to Bonanza Slots to enjoy the Steam Tower slot by NetEnt online if you already have an account. New visitors will need to sign up before they can play any slot games on the site, but worry not because the process is simple;

  1. Click ‘Join Now’ to start.
  2. Fill in all the gaps in the dialog box that appears on the screen requesting your name, age, mobile number, etc.
  3. Verify your email address to receive updates or special offers when available.
  4. Deposit £10 and win a welcome bonus of up to 500 free spins on Bonanza Megaways (Full Ts & Cs Apply).

Now that your Bonanza Slots account is ready, you can log in to play the Steam Tower slot and more. To play the slot, you will need to click on ‘Spin,’ but before you do, you must check the following;

  • Adjust the number of paylines you want to play from 1 to 15, with the chosen paylines becoming your active lines. Matching symbol combinations will only reward payouts when they land on active paylines.
  • Select how much money you want to wager on each payline you selected to play.
  • Winning combinations in Steam Tower are possible when 3 matching symbols land on an active payline from left to right.
  • The wild symbol lands stacked during the base game to award payouts and trigger the Free Spins feature, which would typically be activated by a scatter symbol though there is none.
  • Click ‘Spin’ to officially start the game.

You can play the Steam Tower demo online to give yourself room to practice before making your first real bet.

Steam Tower Slot Big Win

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Slot Game Statistics

Steam Tower is a 5 reel, 15 payline steampunk-themed slot by NetEnt, one of the best slot developers in 2021. It has a high RTP value of 97.04%, above average of most online slots that rank at 95% or under. The volatility is medium, meaning payouts may be frequent but small-sized before a large haul can arrive.

One of the best things about the Steam Tower game is how well the theme has been executed in design, gameplay, storyline, and bonus features. We’ve prepared a better summary in the table below to give you more info on what to expect.

Steam Tower



5 reels, 3 rows, 15 paylines



Bonus features

Stacked wilds, multiplier, and free spins

Min bet per spin


Max bet per spin








Max payout

2,000x your stake

*All of the above values are subject to change at any time.

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Steam Tower Free Spins and Bonus Features

NetEnt’s Steam Tower slot includes two bonus features; the stacked wilds during the base game, and a main Free Spins feature. The scatter symbol would be the one to start up the Free Spins, but there isn’t any available in this slot. Instead, the stacked wilds that land randomly during gameplay usually trigger the free spins and reward multipliers of up to 7x that increase the closer you get to rescue the princess from her captor, the dragon.

  • Free Spins feature - the Steam Tower free spins are triggered when a stacked wild lands randomly during the base game. They can award even more free spins if they continue to land during the feature offering up to 2 free spins for each. When the feature begins, the player ascends the floor and sees it recorded on the Floor Meter that indicated where you are. There’s also a Multiplier Meter that indicates the multiplier you’ve triggered and the next one you can win. The Tower Meter indicates the value of your current multiplier and where exactly you are in the tower; which is perfect because it shows you how close you are to saving the princess.

You will climb a level up the tower on each successful spin until you can make it to the 16th floor and collect your 1,000-coin payout. Multipliers that get triggered by the player depend on what level you’re at; for example, the 1st to 3rd floor triggers a 2x multiplier, the 4th to 6th floor triggers a 3x multiplier, the 7th to 9th floor triggers a 4x multiplier, the 10th to 12th floor triggers a 5x multiplier, the 13th to 15th floor triggers a 6x multiplier, and the 16th floor triggers a 7x multiplier.

Verdict on this Slot

Steam Tower may sound complicated, but it is a very easy and enjoyable slot to play once you understand the main Free Spins feature. The high RTP of 97% is one of our favourite things in the NetEnt slot because it is one of the highest you can find in online slots in 2021.

The bonus Free Spins feature with the increasing multiplier will have you keeping your fingers crossed that you can make it up the tower and win the 2,000x stake win. We loved Steam Tower so much that we ranked it an 8/9. If you are looking for something with a little more sun and scenery, try the Stampede slot.

*All values (Bet Levels, Maximum Wins etc.) mentioned in relation to this slot game are subject to change at any time.

*Any Free Spins/Welcome Bonuses References are subject to the following: NEW PLAYERS ONLY, MIN DEPOSIT £10, MAX BONUS EQUAL TO LIFETIME DEPOSITS (UP TO £250), 65X WAGERING REQUIREMENTS AND FULL T&CS APPLY.