- Min stake: 10p
- Max stake: £50
- Max payout: £250,000
- Jackpot: No
- Paylines: from 243 up to 7,776 ways to win
- Special features: Reel Expansion Feature, Free Spins Bonus, Mystery Symbol Feature
Head to this spooky underworld and get spinning for serious cash rewards. This ethereal slot from our stash of online slots and games is teeming with ways to boost your balance. Glide across the reels as you spin glowing jewels, skull-studded books, and mysterious chalices, collecting cash prizes as you go. How many Key symbols will you need to magnify your wins? Play Skeleton Key online to find out.
The base game has 243 ways to win, rising to 7,776. This slot is bursting with free spins prospects, which will get going when three or more Bonus symbols land anywhere on the reels. Five of these will award you with a whopping 30 free spins! When the Key symbol lands anywhere on the reels, the Reel Expansion Feature will come into play. If one of these lands during the Free Spins Bonus, the multiplier will be triggered – transforming your cash prizes into colossal wins. What are you waiting for?
Reel Expansion Feature
Key symbols trigger this feature. If a key symbol appears on any reel, that reel expands to 6 symbol positions high. The reel height remains 6 symbols high on the next spin, before dropping down 1 position on subsequent spins until it reverts to 3 symbol positions high. If a Key symbol lands at any point during this, the sequence resets.
Mystery Symbol Feature
Mystery symbols can land on any spin triggering the Mystery Symbol feature which transform all Mystery symbols into the same symbol.
Free Spins Bonus
3 Bonus symbols award 10 free spins. 4 Bonus symbols award 20 free spins. 5 Bonus symbols award 30 free spins. Each Key symbol that lands during the bonus triggers the Reel Expansion feature and awards a 1x multiplier which adds to an accumulating win multiplier. During the Free Spins Bonus, Mystery symbols can transform into Key symbols, meaning big jumps are possible in the increasing win multiplier.
For information on symbols and base game instructions, please see in-game help menu.
Malfunction voids all plays and pay. RTP = 94.46%