Skeleton Key

Provider: IGT
Move through the mysterious mist for more ways to win

Read this online slot review for Skeleton Key to find out more about game features and a lot more!

Skeleton Key

5 Number of Rows
0.1 Minimum Stake
243 Betlines
6 Wheels


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General Information

Skeleton Key

Profit Information

Maximum Profit (x Your stake)


Maximum Stake
Minimum Stake

Skeleton Key Review

Skeleton Key Logo Ontario
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Enter a murky cave where the darkness hides untold wonders. IGT delivers the spooky treasure-filled MultiWay Xtra slot Skeleton Key. Let’s find out how to unlock the gruesomely good rewards that wait for those who dare. Keep reading our Skeleton Key review to explore the game features, mechanics, design and potential wins.

What you’ll find in this Skeleton Key Review

Flashy graphics or a large jackpot can draw attention, but we want to know whether a slot has the depth to keep you entertained in the long run. For that reason, we examine all facets of a game, from its RTP to the soundtrack, to understand what experience it will deliver.

  • Min and max bet: What’s the highest amount you can bet, and what’s the lowest starting point for wagers?
  • Maximum win: Does the slot have a jackpot, and if not, what’s the maximum amount you can win?
  • RTP: What’s the theoretical payout rate or Return to Player for this game?
  • Volatility: Will the slot give out smaller, but more frequent wins, or will patience be required for more significant rewards?
  • Autoplay options: Is it possible to set the reels spinning without pressing the spin button every time?
  • Graphics & sound: Have the designers brought together the theme as a whole through animations and a superb soundtrack?
  • Theme and slot symbols: Is the theme clear and interesting, and how do the symbols fit in?
  • Features: Can you expect special symbols, such as Wilds and multipliers?
  • Special features game: Is there more action away from the base game, and how do you get there?

Skeleton Key Symbols and Payouts

You need to know what you’re looking for when you spin the reels. This section on symbols, RTP and volatility will help set your expectations for the kind of slot you’ll be playing.

The Symbols

There are 10 symbols to spot on the reels, and they can be split into three categories. The high-value ones are the chest, book and goblet, which feature the skeleton. Next you, you have the purple, red and green gems. The low-value icons are the playing cards J, Q, K and A.

Skeleton Key Paytable 1
Skeleton Key Paytable 2
Skeleton Key Paytable 3


The base game has 243 ways to win, but that can be expanded up to 7,776 through the special feature. It pays left to right, and for some symbols, you only need to land two for a win.

Min/Max Bets and the Slot’s Autoplay Options

The minimum bet for this game is $0.10, and the maximum takes you up to $300. You can turn on autoplay by hitting the icon with a plus symbol inside the spin button. 

Skeleton Key RTP

The RTP of the Skeleton Key online slot varies based on the reels that are active. It ranges from 92.43% up to 96.49%.


Skeleton Key Maximum Win

The game has medium to high volatility. It means some patience might be required for those potential wins, which could be larger than low volatility slots.

Maximum Win

There isn’t a jackpot, but the maximum win that you can expect from this slot is 83,333x.

Creepy, But In A Good Way!

The symbols fit well with the mysterious horror theme mixed with an element of treasure. Although the RTP can dip to below average depending on the reels active, the top amount sits at the average point for slots. 

What really stands out about the game, though, is the maximum win; at 83,333x, it has massive potential.

Game Features

When you’re playing this slot, you’re doing more than hoping to line up symbols. It’s a hunt for the skeleton key, which will unlock entertaining treasures.

Skeleton Key Wild

Wilds and Reel Expansion

The special features of this slot are where it really comes into its own


The Wild looks like a skull. It can stand in for all icons except the scatter, mystery symbol and skeleton key.

Mystery Symbol

Skeleton Key Mystery Symbol
Mystery Symbol

The mystery symbol is a question mark. It can appear anywhere during the base game and special features. It will transform into one of the regular symbols, but not a Wild or a skeleton key. If there’s more than one, they’ll all change to the same icon. Only the symbols on the active reels count towards your wins.

Additional Spins

Skeleton Key Additional Spins
Additional Spins

The blue padlock symbol acts as the scatter. You’ll need to land three or more to trigger the additional spins special feature. With three padlocks, you get 10 spins, and any other scatters on the reels earn you an extra 10 spins. 

You can re-trigger the additional spins feature by landing more scatters during the round. It’s played across the standard reels, but they could expand as they would in the base game using the skeleton key.

Landing a skeleton key in this round increases the win multiplier each time. The symbols keep falling until the skeleton keys disappear.

Reel Expansion

The starting point for the game is a five-by-three grid. However, the reels can expand upward into the mist. When you land a skeleton key on a reel, it reveals the symbols above, doubling the height to a column of six.

The skeleton key disappears once the reel has expanded, and the symbols drop from above to fill the space. Any icon apart from the skeleton key can fall onto the reels. Only one key can appear on each reel per spin, but you can get multiple expansions in one turn.

The reel stays with six rows for the next spin. Each turn after that will decrease it by one until it reverts to the original height of three symbols. If a new skeleton key lands, it’ll expand back to six.

Skeleton Key Graphics and Sound

Part of the slot’s appeal is how it looks and how immersive the music and sounds are. Let’s take a look at how this MultiWay Xtra game performs.

Optimized for Mobile👍
MusicEerie soundtrack that builds tension as you play.
Special featuresThe sound effects fit the theme well, with unlocking and clunking metallic noises as the reels expand and the treasure falls.

Cartoonish Scares Packed Full of Action

The graphics are attractive, and the fun and bright colours take the edge off the scary atmosphere. The gameplay manages to hold your attention thanks to the regular appearance of skeleton keys and mystery symbols. However, triggering the additional spins feature is more challenging than we’d like.

Solutions For Problems With The Skeleton Key Online Slot

If your skeleton key no longer seems to fit the lock, find out what could be going wrong with these scenarios and solutions.

  1. My game is stuck; what should I do? — You might need to refresh the page to get back in. If the slot can resume from where you left it, it will. Otherwise, your bet and the spin will be void.
  2. The game didn’t pay out my winnings; why not? — You should check the paytable to be sure of what constitutes a win. If you definitely should get a payout, take a screenshot and contact customer support to raise the issue.

Bones, Gems and Mystery; What More Do You Need?

Skeleton Key Game board
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The theme and action in the Skeleton Key slot deliver a thrilling adventure. The sound effects and curling mist animations immerse you in the game. There are enough features to give the action a decent pace, although glimpsing the special feature with additional spins requires a lot of patience.

As a spooky Halloween slot or an all-year-round creepy caper, the game will keep you entertained, especially if you’ve set your sights on that significant max win. We rate it 8.5/10.

Other Games Similar to Skeleton Key Online Slot

Looking for more spooky fun, we’ve got the ideal recommendations lined up for you:

  • Book of Halloween – a spine-chilling title with pumpkins and supernatural wins.
  • The Ghost Walks – switch out skeletons for ghouls for a different kind of ghostly adventure.

What is a MultiWay Xtra slot?

A MultiWay Xtra is a type of IGT slot. It means that you can line up symbols in any position across the reels. The more matching symbols on a reel, the bigger your win will be.

How many paylines does the slot have?

The slot starts with 243 ways to win. As the reels expand, so do the paylines. You can check how many are active at any time by checking the announcement at the side of the grid.

How do I expand the reels?

The reel expands upwards when you land a skeleton key on the active grid.

What is the RTP or this online slot?

The RTP of the slot varies since the reels expand. It ranges from 92.43% to 96.49%.

Casino Content Writer
Kayleigh is a casino content writer for the Canadian market. Before working on this market, Kayleigh was writing for the general US market and further specialised in the Pennsylvania market. Now, she brings her knowledge and experience to the Ontario market! She’s been working as a writing professional for the last decade, and she’s dedicated to bringing you practical tips, right at your fingertips.
Skeleton Key


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