Skeleton Key Slot – 94.46% RTP, 83,333x Max Win

Quick answer

Skeleton Key is a IGT slot (2020) with 94.46% RTP, high volatility and a 83,333x max win. It uses 7,776 ways with free spins, wild symbols and mystery symbols. RTP can vary by casino.

Key specs

RTP: 94.46%
Volatility: High
Max win: 83,333x
Grid: 5×6
Pays: 7,776 ways
Released: 17 December 2020
Bet range: $0.10–$1,000
Jackpot: None

Top-rated casinos (check the game is available)

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Aurivo Casino100% up to $1,000 + 200 Free Spins30x bonus
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18+. New customers. Min dep $20. 30x bonus wagering. Max bet $5. 30 days. 200 spins on Book of Dead at $0.20. Credited in daily batches of 20 over 10 days. Full T&Cs apply.
Key terms
18+. New customers only. Min deposit $20. 30x bonus wagering requirement. Max bet $5 while wagering. Free spins on Book of Dead at $0.20 per spin. Spins credited in daily batches of 20 over 10 days. Offer valid 30 days. Full T&Cs apply. Please gamble responsibly.
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18+. New customers. Min dep $20. No wagering. 7 days. 150 spins on Big Bass Bonanza at $0.10. Full T&Cs apply.
Key terms
18+. New customers only. Min deposit $20. No wagering on winnings. Free spins on Big Bass Bonanza at $0.10 per spin. Offer valid 7 days. Full T&Cs apply. Please gamble responsibly.
Kronos Royale200% up to $2,000 + 10% weekly cashback40x bonus
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18+. New customers. Min dep $50. 40x bonus wagering. Max bet $10. 60 days. Full T&Cs apply.
Key terms
18+. New customers only. Min deposit $50. 40x bonus wagering requirement. Max bet $10 while wagering. Cashback: 10% of net casino losses each week (Monday to Sunday), paid as cash with no wagering every Monday, up to $500 a week. Offer valid 60 days. Full T&Cs apply. Please gamble responsibly.

Game availability varies by casino and country.

What does an hour cost?

Themes:

Adventure & treasure Fantasy & magic Gems & gold

Member access — full guide unlocked

How to play Skeleton Key (members only)

Instead of fixed lines, matching symbols on adjacent reels pay in any position, starting from the leftmost reel. The more matching symbols there are on each reel, the more ways the combination pays.

Skeleton Key is played on a 5×6 grid with 7,776 ways.

Set your stake. Choose your total bet per spin between $0.10 and $1,000. Wins are paid as multiples of this stake.
Check the paytable. Open the game's info screen to see what each symbol pays and the exact rules for this version.
Spin. Each spin's result is decided by a certified random number generator, independent of previous spins.
Trigger the bonus. Land the required scatter symbols to start the free spins feature.

The full Skeleton Key guide: how winnings work, 3 features and 3 strategy tips

Your stake plan: a $50 budget → about $0.17 a spin (high volatility)
What 94.46% RTP costs per $100 wagered: $5.54 on average
3 features explained: free spins, wild symbols, mystery symbols
Stake plans for $20 to $250 budgets, checked against the $0.10 minimum bet
4 slots with the same style and a higher RTP (up to 98.12%)
Strategy tips and a session planner for Skeleton Key

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How winnings work (members only)

What 94.46% RTP costs per $100 wagered, the 83,333x max win at a $1 stake

The top prize is capped at 83,333x your stake. On a $1 spin that is $83,333; on $0.20 it is $16,666.60. When the cap is reached the round usually ends immediately.

What 94.46% RTP means

Expected return = stake × 94.46%
Over $100 of total bets, the long-run average loss is $5.54

RTP is a long-run average across millions of spins. Any single session can finish far above or below it, especially on a high volatility game.

Features explained (members only)

3 features explained: free spins, wild symbols, mystery symbols

Free spins

A bonus round of spins played at no cost to your balance, usually triggered by landing three or more scatter symbols. Wins during the round are added to your balance, and many games let you retrigger extra spins.

Wild symbols

Wilds substitute for regular paying symbols to help complete winning combinations. They do not normally replace scatter or bonus symbols.

Mystery symbols

Special symbols that all reveal the same randomly chosen regular symbol, which can complete several wins at once.

Strategy tips (members only)

Size your stake to the volatility. High volatility concentrates the return in rare, large wins. Long losing runs are normal. Keep stakes small (around 1% of your session budget or less) so you can ride out the swings. A simple rule: bring at least 300 spins' worth of budget, so a $50 budget suggests a stake of about $0.17.

2 more tips and a session planner

Bonus wagering: at 94.46% RTP, clearing $1,000 of wagering costs about $55.40 on average. Check the bonus terms, as some casinos exclude specific games. Run your numbers in the wagering calculator.
Set limits before you spin. Decide your loss limit and session time in advance and stop when you reach either. No pattern or betting system changes the outcome of a spin.

More on this in slot RTP and volatility explained and bankroll management.

Does it fit your budget? (members only)

Stake plans for $20 to $250 budgets, checked against the $0.10 minimum bet

For high volatility we suggest a budget of at least 300 spins. This is what that means for Skeleton Key (bets from $0.10 up to a maximum bet of $1,000).

Stake plans for Skeleton Key
Budget	Stake a spin	Bet range	Average cost of 300 spins
$20	$0.07	Below the $0.10 minimum bet	$1.11
$50	$0.17	Fits	$2.77
$100	$0.33	Fits	$5.54
$250	$0.83	Fits	$13.85

Averages only: a short session can end far above or below them. Set a loss limit before you play.

Same style, better RTP (members only)

4 slots with the same style and a higher RTP (up to 98.12%)

Slots with the same mechanic (ways to win) and volatility (high) as Skeleton Key, with a higher published RTP. Casinos can still run lower versions of any of them.