Mystery Kingdom Mystery Bells

Mystery Kingdom Mystery Bells Slot Review

Bare trees dissolve into blue-grey mist below a graveyard of leaning stones, a castle with too many spires looms half-lost on the hill, and small gilded skulls perch on the corners of the gold reel frame. Mystery Kingdom Mystery Bells takes its gothic mood seriously, then bets everything on a structure most studios wouldn’t dare: the base game pays nothing at all. Every prize in this game, without exception, waits inside one bonus round.

Wazdan built it that way on purpose. The game runs on a 3×4 grid of 12 independent reels, pays an average return of 96.13%, and caps everything at a GRAND Jackpot of 750x the bet, a formula the studio has refined across titles like 9 Coins Grand Diamond Edition, 9 Lions Hold The Jackpot and Hot Slot: 777 Coins. The graveyard is the setting; the bonus round is the entire game.

Twelve Reels and No Regular Symbols

The setup is unconventional from the first spin. Twelve independent reels sit in a 3×4 arrangement, and not one of them carries a regular paying symbol. Nothing lines up, nothing pays left to right, and every prize in the game lives inside the Bonus Game.

What you see while you spin are Bonus symbols drifting onto the reels: coins carrying cash values, and the Mystery symbols that give the game its name. The middle row is the one that matters. Four Bonus symbols of any type landing there is the game’s single trigger, and it fires the Hold the Jackpot Bonus Game.

Cash Infinity Symbols

The base game isn’t entirely idle, because Cash Infinity symbols can appear at random and stick where they land. They hold their position while the rest of the reels keep spinning, and they stay there until the Bonus Game finishes.

Each one carries a prize worth between 5x and 10x the bet, paid out at the end of the bonus rather than on the spot. How they behave across bet levels is where it gets interesting:

• Cash Infinity symbols on the middle row increase the chances of triggering the Bonus Game
• Changing bet levels removes them from the reels temporarily
• Playing a full round on a different bet level clears them completely
• When a sticky symbol lands, the outcome of the remaining non-sticky reels is entirely random

So the sticky coins reward patience at one stake, and punish hopping between levels. It’s a mechanic that quietly commits you to a bet size.

Hold the Jackpot Bonus Game

This is where the entire game pays. Once triggered, all Bonus symbols stick to the reels and 3 respins are granted. Every new Bonus symbol that lands resets the respin count back to three.

The round runs until the respins run out or all 12 positions fill. Filling every reel with Bonus symbols of any type awards the GRAND Jackpot outright.

What the Symbols Pay

The prize ladder inside the bonus works like this:

• Cash symbols – prizes from 1x to 5x the bet
• MINI Jackpot – 10x the bet
• Minor Jackpot – 20x the bet
• Major Jackpot – the one rung that doesn’t scale cleanly, reading 50x at one stake and 500x at another
• GRAND Jackpot – 750x the bet, the maximum prize in the game

Multiple jackpots of the same type can be won in a single round, and the final prize is the sum of all Bonus symbol values including the MINI, MINOR and MAJOR Jackpots. The GRAND is different: it ends the round on its own, and nothing else gets added to it.

One Click to the Grand Jackpot

When the bonus triggers, every empty reel is filled with Mystery Bells symbols. You pick one and click it to reveal what’s underneath: a MINI, MINOR, MAJOR or GRAND Jackpot symbol, or nothing at all. Draw the GRAND and the round ends immediately with the full 750x prize.

It’s a simple pick, but it front-loads the tension. The biggest prize the game offers can arrive before the respins have even started.

Collector and Mystery Symbols

Two special symbols add depth during the respins. The Collector symbol accumulates every value from Cash and Cash Infinity symbols on the reels and multiplies the total by a random factor between 1x and 20x. Landing one late in a full board is where the biggest non-jackpot payouts live.

The Mystery symbol can transform into any other Bonus symbol except Cash Infinity. The Jackpot Mystery symbol is narrower, turning only into MINI, MINOR or MAJOR Jackpot symbols. Both open one by one at the end of the round, so the final tally can build slowly after the respins have stopped.

Buy Feature and Extreme Volatility

A shopping-cart icon in the bottom bar opens the Buy Feature, which skips the base game and activates the Hold the Jackpot Bonus Game directly. The bonus then plays at the same bet level and Volatility Level as the spin that triggered it.

The buy also unlocks two settings the base game doesn’t offer: Extreme and Double Extreme Volatility levels, which are characterised by even bigger wins than the standard Volatility Levels. For a game whose entire payout structure sits inside one bonus round, being able to choose how fierce that round plays is a meaningful option rather than a gimmick.

Our Honest Verdict

Overall Rating: 7.1/10

This is a game that sits in a graveyard and asks you to wait with it. Coins stick, the middle row fills or it doesn’t, and nothing pays until the bell finally tolls. That patience is the whole reason to choose it: no other build makes a single bonus round feel this consequential, because there is genuinely nothing else.

The strength is how much the bonus itself can do once it arrives, from the one-click shot at the GRAND to a Collector that can multiply a crowded board. The weakness is the ceiling. 750x is small for a game built entirely around one round, and once Cash Infinity coins start sticking, you’re pinned to a single stake.

For fans of the coin-collection format who enjoy a long, quiet build, this graveyard is good company. Anyone chasing four-figure ceilings will find the fog clears quickly here.

Mystery Kingdom Mystery Bells FAQs

• What is the RTP of Mystery Kingdom Mystery Bells?

  The game’s average return to player is 96.13%.
• How does the Hold the Jackpot Bonus Game trigger?

  Drawing four Bonus symbols of any type on the middle row of the reels activates the Hold the Jackpot Bonus Game. Cash Infinity symbols landing on the middle row also increase the chances of triggering it.
• How many paylines does Mystery Kingdom Mystery Bells have?

  None in the traditional sense. The game has 12 independent reels on a 3×4 grid, with no regular symbols in the base game. Prizes can only be won in the Bonus Game.
• What is the maximum win on Mystery Kingdom Mystery Bells?

  The maximum prize is 750x your bet, awarded as the GRAND Jackpot. It’s won either by drawing the GRAND Jackpot symbol in the One Click pick or by collecting all 12 Bonus symbols during the Bonus Game.
• What do Cash Infinity symbols do?

  Cash Infinity symbols appear randomly in the base game and stick to the reels until the end of the Bonus Game. They carry prizes of 5x to 10x your bet, paid at the end of the bonus. Changing bet levels removes them, and playing a full round on a different level clears them completely.
• Can you buy the bonus on Mystery Kingdom Mystery Bells?

  Yes. The Buy Feature lets you activate the Hold the Jackpot Bonus Game directly, including on Extreme and Double Extreme Volatility levels, which are characterised by even bigger wins than the standard Volatility Levels.
• When is Mystery Kingdom Mystery Bells released?

  Mystery Kingdom Mystery Bells’ release date is 2 March 2023.
• Who makes Mystery Kingdom Mystery Bells?

  Mystery Kingdom Mystery Bells is made by Wazdan, the studio behind the Hold the Jackpot series of coin-collection slots.