Book of Ruby Slot (Retro Gaming) Reviewed by Crypto-Gambling.io

October 28, 2022

Retro Gaming has recently released another simple classic slot – Book of Ruby, that uses the unique Retro Bet feature. The slot has a traditional reel layout of 4 rows, 5 reels, and 10 fixed pay lines. What is certain about this game is that you won’t be bored by its overall design and sounds: the graphics are captivating, the gems are beautifully drawn, and the crystal background is soothing. Besides the aforementioned, Book of Ruby brings many more benefits and features to its players, including:

  • Special features that can increase the chance of winning;
  • Provably fair algorithm;
  • Licensed and verified game provider;
  • Simple game rules;
  • Engaging theme and graphics.

If these features have successfully triggered your interest, then go on and play Book of Ruby online on one of the popular online casinos recommended by our team.

Book of Ruby Slot

Play Online Book of Ruby For Real Money

If you want to fully enjoy the gaming process and also get some big real money prizes, you should register and open a player account at one of the top online casinos. Creating an account is pretty simple and a matter of several minutes. All you need is:

  • Set up an account by entering the required information (name, age, country, etc.);
  • Make your first qualifying deposit to be able to stake;
  • Start your journey and play Book of Ruby for real money to win the possible huge jackpots.

If you are still hesitant to load the real money play, you have the option to try out the slot for free. The Demo Book of Ruby slot allows you to have a full experience of the game without the need to deposit money or register an account.

Book of Ruby Game Mechanics 

Book of Ruby (Retro Gaming) is played on a 5×4 grid and has ten fixed paylines. The game provider has done an excellent job with the slot graphics. You will definitely enjoy this classic slot game with great functions and special features.

Book of Ruby Symbols

Most importantly, the slot machine has provably fair and licensed software. Therefore, you don’t need to worry about the game’s fairness and just have fun playing the slot. 

Return to Player (RTP)

The RTP rate for Book of Ruby is 96,57%. It means that based on your betting amount, the expected long-term return is about 96,57% of the total sum of your stake.


This slot machine, compared to other slot games, comes with high volatility. The prize amount is quite high, so, here, you have the advantage of getting a lot of big rewards from time to time.

Maximum Winning

In terms of the maximum winning, you won’t be disappointed either. If you land the right combinations, you can get the Book of Ruby big win, which is 1000x of your placed bet just in one go.

Betting and Prizes 

To play Book of Ruby, you need to have a minimum bet amount of €0.10. The maximum betting amount for this slot game goes up to €20. 

Book of Ruby Features and How They Work 

Book of Ruby Features

Book of Ruby comes with some special symbols and features that will take your gameplay to another new level. Here let’s review each of them in detail.

Retro Bet Feature 

Activating the Retro Bet feature will help you unlock the Multiplier Box feature, which can multiply your earnings by 1x – 5x. This feature remains active until you decide to turn it off. Retro Bet costs an amount equal to your total stake. Moreover, while active, winnings are paid according to the original total stake (without the cost of the Retro Bet feature).

Free Spins – Expanding Symbol

During the Free Spins feature, after the game result has already been determined, the expanding symbol will enter the play to form new paylines in addition to the fixed paylines. However, this symbol will expand only if the expansion will lead to a win. The expanding symbol will pay according to the slot paytable and in all active lines, no matter whether the symbols of the winning pattern are consecutive or not. Expanded symbols generally count separately from the original slot result. 

Special Features – Scatter Wild Symbol

The Wild symbol that appears during the gameplay is also a Scatter and will count as any symbol. Three or more scattered Wilds anywhere on the reels will trigger 10 free spins and pay according to the following paytable:

  • 5 – 250x
  • 4 – 25x
  • 3 – 2x

Bet per line is the same as the game that activated the free spins feature.

Special Features – Free Spins

After the Free Spins feature is triggered, you will be presented with a newly-opened screen. There you need to click the Start button to determine which symbol will be the expanding symbol for the free spins round. Also, Free Spins can also re-trigger and award an additional ten free spins. If you trigger Free Spins while Retro Bet is still active, it will trigger the Free Spins with the Multiplier Box feature multiplying your winnings by 1x – 5x. 

Book of Ruby Mobile Slot

Book of Ruby slot machine is fully optimized for users to enjoy playing it on Apple and  Android devices. All the game features, along with captivating graphics and full-packed functions, are fully preserved when loading it on your mobile gadget or tablet.

Players who prefer the game’s mobile version have two main options: playing via the mobile application or a mobile browser. 

Although both app and browser versions give you a similar gaming experience, you can still consider slight differences when making your final pick. 

The mobile app is the best choice for regular players who can access the slot and its functions with several clicks anytime and anywhere. On the other hand, the browser option doesn’t require any file downloads or installation process, enabling players to enjoy the game straight on their browser.

Play and Win With Book of Ruby

Book of Ruby Paylines

Getting started with the Book of Ruby slot is fairly simple. You just need to load the game on your device and follow the instructions below.

  • Choose the play mode you want: real money or demo version;
  • Get acquainted with game rules and carefully check the slot paytable (low-paying and top-paying symbols, features, etc.);
  • Place a bet by picking your preferred amount from €0.10 to €20;
  • If you like quick gameplay, you have an opportunity to turn on the turbo mode.
  • If you want to play for multiple rounds based on your set limits, you can enable the Autoplay function available in the game. 

All symbols in the game pay from left to right, starting from the leftmost reel, and only the highest win on each line is paid.

FAQ Section

This section will answer some of the most common questions of the players regarding the Book of Ruby slot game and its features. 

What is the RTP of the Book of Ruby?

The highest RTP rate of Book of Ruby is 96.57%. It’s slightly higher than the average return rate of other slot machines

Where Can I Play the Demo Book of Ruby Slot?

If you want to experience the game for free, you can browse the demo versions that nearly all top-notch gambling sites offer. On our website, you can see the list of all top casinos with the Demo Book of Ruby slot version. 

What is the Maximum You Can Win on the Book of Ruby by Retro Gaming?

The theoretical maximum payout in the game can be 1000x your total bet.

Where Can I Play Book of Ruby Slots Online?

We have a special list covering the most popular online casinos on our website. You can look through it and select the best offer from all the available options with the Book of Ruby slot. 

Can I Play the Book of Ruby on Mobile?

Yes, you can! The slot is mobile-friendly and runs perfectly on both Android and Apple mobile gadgets. 

What Other Games Can I Play Similar to the Book of Ruby from Retro Gaming?

Apart from Book of Ruby, which was released not so long ago, other similar slot machines from Retro Gaming cover Book of Golden Joker, Twin Diamonds, Book of Misr, and Shield of Glory.