Play Skeleton Key

The Skeleton Key online slot from IGT is a 5-reel, 3-row slot that starts out with 243 ways to win. But this number can potentially reach as high as 7,776 thanks to the expanding reels feature. Along with the expanding reels, the game also features free spins and mystery symbols.   

The 5x3 grid layout with 243 ways to win in the base game and expanding reels is not something we haven't seen before. It's a similar setup to NetEnt's Vikings slot, where the 5x3, 243 ways to win grid can expand to 7 positions high, increasing the possible ways to win to a massive 78,125.  

As we mentioned, the maximum potential win ways the grid can produce in Skeleton Key is 7,776. Although this is not as high as a Megaways game such as Vikings Unleashed Megaways, it’s still an impressive number. And even the 243 ways that are available in the base game is a pretty high figure considering other 5x3 slots like Book of Oz, Chilli Heat or Sticky Bandits Trail of Blood all feature only 10 paylines. 

Despite the spooky theme and swirling green fog covering the locked portion of the grid, the comic book style graphics give the whole game a humorous rather than scary feel. There are also entertaining animations and an appropriately eerie soundtrack to add to the atmosphere. 

If you're already a member of Heart Bingo, simply log in. If not, signing up is a cinch – just locate the Sign Up button in the top right corner. Our user-friendly account creation process is guided by crystal-clear instructions. Once your account is up and running, simply make a deposit, and you are ready to play. Just remember, responsible gaming is vital, so check out our Safer Gambling Tools, including Time Reminders and Deposit Limits, all designed to keep our players safe.  

Once you've found Skeleton Key in our extensive slot collection, it's time to set the stage. Use the coin icon to choose your bet amount. The game offers a betting range from a minimum of £0.10 up to a maximum of £300.00 per spin. 

All the game info is displayed beside the grid to help players keep track of the action. You'll find the current ways to win, your wins, total bet, coin value, and balance all conveniently laid out. Tweak your total bet using the - and + buttons until it's at a level you are comfortable with, although we recommend players stick to the lower end of the betting range.  

The game features a total of 14 symbols, four low-paying card symbols, six premium picture symbols, and four special symbols. Details of the payouts for winning combinations are in the table: 

The wild does its usual thing and serves as a substitute for all other symbols on the reels, except for the other special symbols. The lock bonus symbol, the mystery symbol and the skeleton key symbol all play a role in the bonus features, which you can find out about below. 

Expanding Reels 

As the name implies, the Skeleton Key symbol is, well, the key to unlocking the game’s main attraction, the Expanding Reels feature. If one of these symbols lands during gameplay, it unlocks an extra three positions on the reel, expanding it to six high, before being replaced by a regular symbol. The expanded reel will decrease one position in height on each following spin until it returns to its normal size of three high.  

Free spins 

The free spins bonus feature triggers if three or more lock symbols land anywhere on the reels. Players are awarded 10, 20, or 30 free spins for 3, 4, or 5 lock symbols respectively. It is also possible to win extra free spins if two locks appear on the reels simultaneously during the bonus round. The Expanding Reels feature is still active during the free spins, and the Skeleton Key takes on an extra role. If it lands, not only will it expand the reel, but it will also increase the win multiplier, which starts out at 1x. 

Mystery symbol 

The Mystery Symbol typically lands in clusters, and all instances on the reels will transform into the same paying symbol.  

Where can I play Skeleton Key slot game? 

You can play the Skeleton Key slot right here at Heart Bingo! 

Skeleton Key doesn't really bring anything new to the table in terms of gameplay. However, IGT has managed to combine familiar features with excellent and entertaining graphics to produce a thoroughly enjoyable game.  

The Skeleton Key slot is just one of the many great games available here at Heart Bingo, a trusted destination for online gambling. With its full licensing and commitment to Safer Gambling, Heart Bingo provides a secure and responsible environment for players.