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Game Rules

Magical Stacks

5-Reel, 20-Line SlotUnique Spin and Sound System

The objective of playing Magical Stacks online slot is to match symbols on the paylines. The slot has a Japanese anime theme, but the big payouts mean it will still be a big hit with fans of traditional casino games like online blackjack and roulette.

How to Play:

  • Activate up to 20 paylines by using the +/- buttons underneath the Lines Field.
  • Choose the Line Bet by using the +/- buttons underneath the Line Bet Field.

Note: Total Bet = Line Bet x Number of Paylines.

  • Click Spin or Bet Max to spin the reels. Clicking Spin will play the slot with your specific bet selections. Clicking Bet Max will play the slot with all 20 paylines activated.
  • Open the Auto Play menu if you wish to play 10, 25, 50 or 99 spins automatically. The Auto Play button will change to Stop when the reels are spinning automatically. Press it to exit from Auto Play.
  • Switch on Turbo Mode if you wish to speed up the game animations for faster results.

Note: Winning combinations of symbols are clearly highlighted on the reels.

Note: You can view the payouts by clicking the Info button. Line Win payouts are multiplied by the Line Bet. Scatter Win payouts are multiplied by the Total Bet.

Info Pages:

Select Info to open pages displaying various reference information, including the Paytable. Use the arrow buttons to change pages. Press Back to exit and return to the reels. Brief descriptions of the Info Pages are provided below:

Paytable – opens the Info Pages, which includes full payout information.

Super Magical Free Games – explains the rules and special features of Free Games.

Mystery Stacks – describes the behaviour of the Mystery Stack Symbols.

Paylines – illustrates how all 20 paylines are positioned on the reels.


Magical Stacks slot can be played with up to 20 paylines. These are the directions that matching symbols must follow (left to right) across the reels to pay as Line Wins.

Please be aware that the Line Bet and Total Bet are not the same. The Line Bet refers to the amount staked on each payline. The Total Bet refers to the amount staked on all active paylines added up.

About Payouts:

Every possible payout is listed on the Paytable Info Page. For Line Wins, take the relevant figure and multiply by the Line Bet. For Scatter Wins, multiply the figure by the Total Bet.

A Line Win consists of matching symbols on a payline. The chain of symbols must start on Reel 1, working left to right across the reels.

Only the highest value combination of symbols will be paid on each individual payline. You will be paid for Line Wins occurring on different paylines.

Wild Symbols:

Wild Symbols can substitute for all other standard symbols to make the best possible Line Win.

A chain of Wild Symbols on a payline can also pay out as a Line Win.

Note: Wild Symbols do not substitute for the Scatter Symbol or Mystery Stack Symbols.

Scatter Symbols:

The Scatter Symbols will pay out if three or more land in any position on the reels.  When this occurs, you will also be awarded Super Magical Free Games.

Note: The Payout for the Scatter Symbols is multiplied by the Total Bet.

Mystery Stack Feature:

The Mystery Stack Symbols can land on several different positions on the reels. When they fall on the reels, they will all change to one of the other symbols. Line Wins are then calculated with the new symbols in place.

Please note:

  • Mystery Stack Symbols will not change to Scatter Symbols or Multiplier Symbol (used in Free Games only).
  • Line Wins are not guaranteed during the Mystery Stack Feature.

Super Magical Free Games:

10 Free Games with a Dynamic Multiplier are awarded when three or more Scatter Symbols land anywhere on the reels. Press Click To Start to launch the Free Games.

At the beginning of the Free Games a random Multiplier is awarded. This can be x2, x3, x4 or x5. Payouts from the first spin will be multiplied by this number. If the Multiplier Symbol lands on Reel 5 after any spin, the Multiplier will be increased by +1 for the next spin. If the Multiplier Symbol does not land on Reel 5, the Multiplier will decrease by -1. The Multiplier cannot exceed x5 or drop below x2.

An enhanced set of reels is used during Free Games. More Mystery Stack Symbols are added to the reels, which can potentially lead to more Line Wins.

When all Free Games have finished, a summary screen will appear detailing the total win from Free Games (Feature Win) and the triggering spin (Game Win). Click Continue to go back to the main game.

Please note:

  • The Multiplier Symbol appears on Reel 5 only and does not have any payout value.
  • Free Games are played at the same Line Bet and number of paylines as the triggering spin.
  • Three or more Scatter Symbols on the reels will award a further 10 Free Games. The Multiplier will remain the same.

Return to Player:

The theoretical RTP (Return to Player) for Magical Stacks online slot is 95.07%.


The game buttons are described below:

Info – opens the Info Pages, which includes the Paytable and information on special features.

+/- Lines – sets the number of paylines.

+/- Line Bet – adjusts the stake for each payline.

Bet Max – spins the reels with all 20 paylines activated.

Spin – spins the reels with your specific paylines selections.

Auto Play – offers a choice of 10-99 Auto Spins. The button changes to Stop when Auto Play is active.

Turbo Mode – speeds up the game animations for faster play.

Casino Toolbar:

General tools and displays are held on the Casino Toolbar, which is located on the upper and lower edges of the screen. These are described below:

Game Balance – shows the current balance you have available to play online casino games.

Cashier – click to launch the main banking menu. You can use the Cashier to deposit/withdraw and to access your banking history.

Play for Real Money – select this button to play Magical Stacks online for real money. This is only applicable if you are playing the slot in Fun Mode.

Menu – press to open a menu offering these further options:

  • History = see the results of previous spins.
  • Options = adjust game settings, including audio and graphics.
  • Help = load this rules guide.
  • Online Support = contact online customer support.

Close – click to end the current session and go back to the casino lobby.

Quick Deposit – select from your preferred deposit options to add funds to your account. A list of quick deposit options can appear in a pop up window (once per session) if your balance runs low.

Gadget Bar – access gadgets (when enabled) from the Gadget Bar menu on the right of the screen. These can include mini casino games. You may also find the latest information on promos and bonus offers from William Hill Casino.

Note on Disconnections:

The spin will be automatically completed if you lose internet connection when playing the main game. You can view the results of the spin if you access the History Tool. Only the next spin is completed if internet connection is lost when using Auto Play.

If internet connection is lost during Super Magical Free Games, you will be automatically redirected back to the game when you log into the casino again. The last current Multiplier will be restored and you can continue playing from where you left off.

Note on Malfunctions:

A game malfunction will result in bets being voided.