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  1. Home/
  2. Rules/
  3. Jekyll and Hyde

Online Casino Games - Rules Explained

Jekyll and Hyde

5-Reel, 20-Line SlotExpanding Wilds and Feature Bet

The goal of playing Jekyll and Hyde online slot it to land a winning combination of symbols on the paylines. Players of traditional casino games, like online roulette and blackjack, will be pleasantly surprised with the big payouts and special features of Jekyll and Hyde slot.

How to Play:

When the game loads, a message appears on screen detailing some of the special features. Press Continue to go to the main screen. Check Don’t Show Next Time to skip this screen the next time the game loads.

  • Use the +/- buttons to set the Total Bet.
  • Press Feature On/Off if you wish to play with Feature Bet.

Note: Jekyll and Hyde slot is always played with 25 fixed paylines.

Note: The Total Bet = Number of Paylines (25) x Line Bet. Feature Bet = Total Bet x 2. The details of Feature Bet are explained in a section below.

  • Press Spin to start the game.
  • Use Auto Play if you wish to set a specific number (10, 25, 50 or 99) spins to be played automatically. Press Stop if you want to quit using Auto Play.
  • Switch Turbo Mode on if you wish to speed up the animations of the reels spinning for faster results.

Note: A winning combination will be clearly highlighted on the reels.

Note: All payouts are listed on the Paytable, which can be accessed via the Info button. Line Wins = Payout x Line Bet.

Info Pages:

Click Info to open the Jekyll and Hyde Info Pages, which includes the Paytable and information on special features. You can flip through the pages using the arrows on the bottom left. Press the X button to return to the reels. The Info Pages are described below:

Paytable (1) – shows the payouts for Low Win Symbols.

Paytable (2) – shows the payouts for High Win Symbols.

Special Symbols – describes the special features of Wild and Scatter Symbols.

Hyde Spins Wild – explains the process of symbols turning Wild during Hyde Spins.

Feature Bet – describes the rules and incentives of playing with Feature Bet.

Free Games – provides an overview of the rules and awarding of Free Games.

Paylines – displays the positions of all 25 paylines on the reels.


Paylines are the directions that matching symbols must follow across the reels to pay out as Line Wins. Jekyll and Hyde slot is played with 25 fixed paylines.

Please be aware of the difference between the Line Bet and the Total Bet. The Line Bet is the wager made on each payline. The Total Bet is the wager made on all 25 paylines (added up).

About Payouts:

All payouts are listed on the Paytable screen. Payouts are x Line Bet.

Only the highest winning combination (Line Win) is paid on each payline. Line Wins on different paylines are added together and paid as a total win.

A Line Win must start on Reel 1, moving left to right across the reels in a chain of symbols on a payline.

Wild Symbol:

The Wild Symbol can substitute for all other standard symbols to form winning combinations. The Wild Symbol cannot substitute for the Potion Symbols (Scatter). Wild Symbols appear on Reels 2, 3 and 4 only.

If a Wild Symbol forms a winning combination, it will expand to fill the entire reel. Other potential Line Wins will then be awarded.

Scatter Symbol:

The Scatter Symbol is the Potion Symbol. It does not need to appear on any payline to be active in the game. You will be awarded Free Spins if three or more Scatter Symbols appear in any position on the reels.

Note: The Scatter Symbol does not have any payout value.

Feature Bet:

Feature Bet is an extra bet that is made to in exchange for Powered Up Potion Symbols (Scatter Symbols). These symbols will be active on the rows directly above and below the reels. This means that there is a greater opportunity to be awarded Free Spins.

Please Note:

  • Feature Bet doubles the Total Bet. However, the Line Bet amount remains the same.
  • The Potion Symbols are red when Feature Bet is active (Powered Up). They are green when Feature Bet is not active.
  • Feature Bet is not applicable during Free Spins.

Free Spins:

Free Spins are awarded when three or more Scatter Symbols appear anywhere on the reels. If Feature Bet is on, Free Spins will be awarded if three or more Scatter Symbols appear anywhere on the reels and the rows directly above and below the reels.

Press Click To Start to launch the Free Spins screen. You will be offered the choice of Jekyll Spins or Hyde Spins.

Jekyll Spins:

If you choose Jekyll Spins, you will be awarded unlimited Free Spins with an Increasing Multiplier. Payouts for all wins achieved during Jekyll Spins will be multiplied by the current Multiplier.  The Multiplier will begin at x1. If the Potion Symbol lands anywhere on Reel 5 the Multiplier will be increased. The Multiplier increases as follows:

  • 1st Potion Symbol = x2 Multiplier for subsequent Free Spins.
  • 2nd Potion Symbol = x3 Multiplier for subsequent Free Spins.
  • 3RD Potion Symbol = x5 Multiplier for subsequent Free Spins.

Jekyll Spins will end the fourth time a Potion Symbol lands on Reel 5.

Hyde Spins:

If you choose Hyde Spins, you will be awarded unlimited Free Spins with High Win Symbols turning Wild. Each time a Potion Symbol lands on Reel 5, one of the High Win Symbols will change to an Extra Wild Symbol. These will substitute for all other symbols to form winning combinations. The High Win Symbols become Wild Symbols in the following order:

  • 1st Potion Symbol = Charles Symbol will become Wild.
  • 2nd Potion Symbol = Beatrix Symbol will become Wild.
  • 3rd Potion Symbol = Ivy Symbol will become Wild.

Due to the extra Wild Symbols, it is possible to be awarded Line Wins consisting of the Wild Symbols only. The payout for a group of Wild Symbols on a payline during Hyde Spins is as follows:

  • 5 Wild Symbols = 1000 x Line Bet
  • 4 Wild Symbols = 200 x Line Bet.
  • 3 Wild Symbols = 40 x Line Bet.
  • 2 Wild Symbols = 5 x Line Bet.

Note: The Line Win for Wild Symbols will only be awarded if the payout is greater than the Line Win with the Wild Symbols substituting.  

Hyde Spins will end the fourth time a Potion Symbol lands on Reel 5.

Please note the following information concerning all Free Spins:

  • Free Spins are played automatically. The number of Free Spins played is displayed on the bottom left of the screen. The total win is shown on the bottom right of the screen.
  • Free Spins are played with the same Line Bet as the triggering spin.
  • The Wild Symbol does not expand during Hyde Spins.
  • The Wild Symbol can expand during Jekyll Spins.
  • Feature Bet is not applicable during either set of Free Spins.
  • Free Spins cannot be retriggered. The Scatter Symbols are removed from the reels, except for Reel 5.

Free Spins for both sets will finish when the Potion Symbol lands for a fourth time on Reel 5. A summary screen will appear detailing the total win from the feature.

Press Continue to return to the main game.

Return to Player:

The theoretical RTP (Return to Player) for Jekyll and Hyde online slot is 96.22%.


The following buttons appear on screen and are used to play the slot:

Info – opens the Info Pages, which includes all payout information.

+/- Line Bet – increases/decreases the Line Bet.

Auto Play – opens a menu for you to choose a set number of Auto Spins.

Turbo Mode – speeds up the animations of the reels spinning etc. for faster play.

Feature Off/On – activates Feature Bet, increases the Total Bet x2.

Spin – spins the reels at the current bet.

Casino Toolbar:

The Casino Toolbar runs along the upper and lower edges of the screen. It contains the following buttons and tools:

Game Balance – shows your current available balance to play online casino games.

Cashier – click to launch the main banking tool. You can use the Cashier for deposits and withdrawals, or to view your transaction history.

Play for Real Money – select to play Jekyll and Hyde slot for real money at William Hill Casino. This button is only active on the Toolbar when you are playing in Fun Mode.

Menu (Tools) – press to open the following further options:

  • History – view the recent spin outcomes.
  • Options – adjust the game’s settings, including audio and graphics.
  • Help – click to access this help page.
  • Online Support – contact customer service.

Close – select to exit from the current tab and return to the casino lobby.

Quick Deposit – use to make fast deposits without opening the Cashier. A list of quick deposit options may appear in a pop up window (once per session only) if your balance is running low.

Gadget Bar – the Gadget Bar will be active on the right of the screen if at least one gadget is enabled. You can use it to play mini casino games, or access information on William Hill Casino bonus offers and promotions.

Note on Disconnections:

If you lose internet connection during a spin, the spin will still be completed. You can view the outcome through the History Tool when you reconnect to the internet.  If you were using Auto Play, only the next scheduled spin will be completed. All wins will be paid into your balance.

If you lose internet connection during Free Games, you will be redirected back to Jekyll and Hyde slot when you log into the casino again. Special features will be restored and you can continue playing from where you left off.

Note on Malfunctions:

A game malfunction will void all bets.

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