• 18+. Not available to UK players. Time restrictions apply. In-game opt in required. €4,000,000 prize pool divided into daily and weekly tournaments until 17th November. Select slots only. Full T&Cs Apply. Play Responsibly. gamblingtherapy.org.
  • 18+ | New Casino customers only. Opt in required. Min deposit €10. Max Total bonus €1,000. Max Total Free Spins 120 on Epic Ape. 40x wagering requirement. Bonus expires 7 days from issue. Play Responsibly | Gamblingtherapy.org | Full Terms & Conditions apply.
  • 18+. Not available to UK players. Time restrictions apply. In-game opt in required. €4,000,000 prize pool divided into daily and weekly tournaments until 17th November. Select slots only. Full T&Cs Apply. Play Responsibly. gamblingtherapy.org.
  • 18+ | New Casino customers only. Opt in required. Min deposit €10. Max Total bonus €1,000. Max Total Free Spins 120 on Epic Ape. 40x wagering requirement. Bonus expires 7 days from issue. Play Responsibly | Gamblingtherapy.org | Full Terms & Conditions apply.
  • 1
  • 2
  • 3

Online Casino Game Rules

Batman and The Joker Jewels

5-reel, 25-line slot1 of 4 DC Super Heroes Jackpots.

The objective of Batman: The Joker Jewels is to spin the reels and match symbols on the 25 active paylines. There are also some special bonus features that could help boost your balance with this fun online casino slot. When you play Batman: The Joker Jewels at William Hill Casino you will also have the chance to enter the DC Superheroes Jackpot Game.

How to Play:

  • Start by choosing your Total Bet. Do this by using the +/- buttons underneath the Total Bet Box. The slot is always played with 25 paylines, so the Total Bet is always calculated as Line Bet x 25. This is the amount deducted from your balance for each spin.
  • When you have selected your bet, click the Spin button to spin the reels and start the Batman: The Joker Jewels slot game. Whenever the reels are spinning the Spin button changes to Stop; select this to speed up the process and get quicker results.
  • You can also speed up the game in the same manner by switching on Turbo Mode.
  • You can set a predetermined number of spins to be played through consecutively using Auto Play Mode. Click on the Auto Play button and choose from 5, 10, 20 or 25 Auto Spins. These will play through without your input, only stopping if a Bonus Feature is awarded, or you select the Stop button.
  • When the reels have come to rest after a spin, any winning combinations will be clearly highlighted on screen and the total amount won shown in the Win Field. All possible payouts are shown on the Paytable screen, which can be accessed via the info button on the bottom left corner of the screen. To calculate the value of a Line Win (matching symbols on a payline), multiply the figure shown on the Paytable by the Line Bet.

Info Pages:

Selecting the Info button on the bottom left of the screen will open up the various information pages for Batman: The Joker Jewels online slot. You can move through the different pages by using the arrows on the bottom right of the screen. To return to the main game, select Reels. The different Info Pages are:

  • Paytable (1) – shows the payouts for high value symbols.
  • Paytable (2) – shows the payouts for standard symbols.
  • Joker Random Wilds – explains the Joker Random Wilds Feature.
  • Batman Vs Joker Free Games – explains the Free Games Feature.
  • Paylines – shows where the paylines appear on the reels.
  • DC Superheroes Jackpot – explains the Progressive Jackpot game.


Paylines are the pathways that matching symbols must follow across the reels to record Line Wins. Only active paylines can register Line Wins.

Please note there is a difference between the Line Bet and Total Bet. The Line Bet is the wager on each individual payline, the Total Bet is the accumulative bet on all paylines.

About Payouts:

All winning combinations and their values are listed on the Paytable. To calculate the value of a Line Win, multiply the relevant figure from the Paytable by the Line Bet.

Only the highest win is paid on each individual payline. Multiple wins can occur on different paylines; these are added together and paid as a total win.

Wild Symbols:

There are two Wild Symbols used in Batman: The Joker Jewels slot – The Joker (Smile) Wild and Batman Wild. They can substitute for all other symbols (except for Bonus Scatter) to help form Line Wins.

Both Wild Symbols can form their own standalone Line Win with a separate payout.

Joker Random Wilds Feature:

This can be triggered on any spin in the main game. The Joker will add up to nine Smile Wilds on random positions across the reels. You will then be paid for any Line Wins according to the Paytable.

Batman Vs Joker Free Games Bonus:

If you land a Bonus Symbol on Reels 1, 3 and 5, the Free Games Bonus will be awarded. You must choose between the Batman and Joker. Choosing a side means that a 5x Multiplier is added to their side of the Multiplier Meter. Landing the special Batman/Joker Wild Symbol will move the Multiplier Meter to the left. All wins in Free Games will be multiplied by the current Multiplier level. Free Games are unlimited and will only end when the Multiplier Meter lands on End.

Please note: Free Games are played with the same Total Bet as the triggering spin.

DC Superhero Jackpot:

Batman: The Joker Jewels features a Progressive Jackpot Game, which it shares with other games in the DC Superhero range of casino games. The Jackpot Game is awarded randomly and is independent of the slot game, meaning you do not need to get a winning result to be awarded the Jackpot Game. If you are awarded the Jackpot Game, you will be guaranteed to win one of four Progressive Jackpots: Mini, Minor, Major or Grand.

A Progressive Jackpot is a prize funded by taking a small percentage of each player’s wagers over a period of time. The idea is that the fund will grow and grow until one player wins the Jackpot payout. The casino will provide a base amount for the Jackpot fund; this is called a seed.

If you are awarded the Jackpot Game:

  • You will be taken to a new screen.
  • The left of the screen has a grid with 20 hexagons. The right-hand side of the screen shows the four Jackpot awards.
  • The objective is to click on the hexagons on the grid to reveal coloured Energy Balls that correspond to each of the four Jackpot awards. Each Jackpot requires a different number of Energy Balls to be awarded: Mini = 2 Balls, Minor = 3 Balls, Major = 4 Balls and Grand 5 = Balls.
  • When you reveal the relevant number of Energy Balls for a particular Jackpot, you will win that Jackpot amount.

Please note: the game is played using a timer. If have not made your choices within the time limit, a Jackpot will be randomly awarded to you.

Any winnings from the main game are added to the Jackpot win and displayed as a total at the end of the DC Superheroes Jackpot Game.

The Jackpot is awarded and funded as follows:

Seed (base amount provided by the casino for Jackpot award)

  • Mini = €100
  • Minor = €1,000
  • Major = €10,000
  • Grand = €200,000

Contribution Rate (amount taken from each wager to fund Jackpot) – 0.99%

Win Condition (result needed to win Jackpot) – Jackpot Game is awarded at random.

Win Requirement (how to be eligible for Jackpot) – play DC Superhero Jackpot casino games at William Hill Casino.

Please note the following information:

The Jackpot amounts are displayed in Euro. You will be awarded the equivalent amount in GBP (or other currency if relevant).

The software used ensures that the Jackpot cannot be won by two players at the same time.

Return to Player:

The theoretical RTP (Return to Player) is 95.01%, which includes the 0.99% Jackpot Game contributions.


The following buttons are used to perform action in the game:

Info – click to access the Info Pages, which includes the Paytable.

+/- Total Bet – use these buttons to increase or decrease the Total Bet.

Auto Play – click to spin the reels using Auto Play Mode.

Spin– spins the reels.

Turbo Mode – switch on/off to speed up the game.

Gadget Bar:

When it is enabled, the Gadget Bar Menu will appear on the right-hand side of the game screen. It may contain information on William Hill bonus offers and promotions, or let you access casino mini games.

Note on Disconnections:

If you lose internet connection when playing the main game, the spin will still be completed. You can view the outcome of that spin by accessing the History when you have re-established a connection.

If you are disconnected during a Bonus Feature, you will be redirected back to the game on re-establishing a connection. You will then be able to continue from where you left off.

If you are disconnected during the DC Superheroes Jackpot Game, one of the four Jackpots will be randomly awarded to you. This will be displayed on screen when you log in to the casino and load the game once more.

Note on Malfunctions:

Malfunction voids all bets, with the stake returned to the player.

How to Play Online Casino Games at William Hill

We pride ourselves on offering a wide range of casino games online to cater to even the most demanding of online casino players. Our search function and simple menu tabs make it easy to find the exact type of casino games you are looking for at any time.

For fans of dealer games, we have an array of video poker, online blackjack titles and other casino card games. If you’re looking for the next big thing from the best game developers around right now then check our frequently updated new releases section. Or if you want to interact with professional casino game dealers in real-time at William Hill Ireland then take a look at our live casino lobby for a wide range of interactive table games.

Each casino game has its own set of rules which dictates how it will function and play. Understanding the rules of each game will help you have a better overall casino gaming experience. We’ve highlighted the rules of different casino game types below to help you understand more about how each one behaves.

Play the Best Video Slot Games

Slot games are one of the most popular types of online casino game and make up the largest selection of games here at William Hill. From classic fruit slots to the latest 3D slots, we work with all the best games providers to offer a large catalogue of high-quality slot titles for all our players to enjoy.

You can choose to keep things as simple or complex as you like with the huge range of slot games available to you. Also by using the demo mode, you can play some free casino games and try them out before you play for real money.

Understanding Video Slot Rules

Each slot game has its own unique set of rules because they often work in slightly different ways. It’s a good idea to click the info tab in any slot game to view the paytable and game notes. This will show you what each symbol is worth and how you go about landing a win on the reels. Some games might have expanding reels, wilds or different payline mechanics which means they change as you play them. You’ll also find some useful information on the bonus features of that specific game and how to trigger them.

Progressive Jackpots

If you want to go big or go home then our range of progressive jackpots will be just what you are looking for. All the current jackpot game totals are displayed for each game in the jackpot lobby. You can see the jackpot totals building up in real-time to help you decide which one to play next.

Progressive Jackpot Rules

It’s important to know what you need to do to trigger the jackpot feature in this type of slot for a shot at landing the big prize total. Checking the paytable info will tell you all you need to know about each individual progressive jackpot game. It should display the symbol combinations required to unlock the bonus rounds for the potential of larger wins.

Live Casino Games Online

For players who want to feel the thrill of playing table games, just like you would at a land-based casino, the live casino lobby is the place to go. Streamed live and direct onto your screen from our casino studios, you can interact with our professional game dealers in real-time. You’ll also be able to chat with other casino players, view the most recent game rounds and even choose your preferred camera angle.

Live Casino Game Rules

Live casino games online can be a bit more complex to play than other types of casino games. It’s a good idea to make sure you are familiar with the basics of how to play any of the table games before you pull up a virtual chair and join in.

As there are many variants for each live casino game, such as online roulette, blackjack and poker, each will have their own set of specific game rules.

If something seems unclear to you then send a message to the professional dealer who can clarify the aspects of that table game. Just remember that they can’t help you with any gaming tactics or strategies, that’s for you to research and plan beforehand.


Here at William Hill, we love to reward our new and existing players with generous bonuses and regular promotions. From bonus cash to free spins, we think that you deserve to get rewarded for playing with us. That’s why you’ll always find some fantastic bonuses on offer including a rewarding casino bonus when you sign up as a new player today. Playing some free casino games will help you get to know all the features and benefits on offer at William Hill today.

Play the Best Online Casino Games at William Hill

It’s easy to join in the fun at William Hill Ireland right now and start enjoying any of the exciting casino games mentioned above. Just follow our simple 2-step sign up form and enter your details when prompted to become our newest online casino player.

Once you’ve signed up and verified your new account, don’t forget to claim our generous welcome offer bonus to give your first deposit a real boost. Our friendly support team are standing by around the clock to help you out should you have any questions along the way.

We look forward to welcoming you into our exciting online casino soon!