Video Slot

Book of King Arthur

Embark on a mythical quest to Camelot. Unleash the power of Excalibur and the legendary Book of King Arthur for wins up to 5,000x your stake!

RTP

96.1%

Volatility

High

Provider

JFTW

Game Overview

Welcome to the legendary court of Camelot in Book of King Arthur, a premier slot experience brought to you by JL99 Casino. Developed by Just For The Win in partnership with Microgaming, this game takes the classic "Book of" mechanic and elevates it with stunning Arthurian visuals and a majestic soundtrack that transports you to the age of knights and sorcery. As you spin the 5x3 reels, you will encounter symbols of King Arthur himself, shimmering chalices, and the mythical Book that holds the key to the kingdom's treasury.

What sets Book of King Arthur apart at JL99 is its perfect blend of tradition and innovation. While players will recognize the familiar expanding symbols mechanic during free spins, the inclusion of the "Boost" feature allows for even greater potential. Whether you are playing on a desktop or using the JL99 app, the mobile-optimized interface ensures that every spin is smooth and every win is celebrated with cinematic flair. Join the Round Table today and see if you are worthy of the crown!

Features & Specifications

Provider

Microgaming / JFTW

Grid Size

5 Reels x 3 Rows

Paylines

10 Fixed Lines

Max Win

5,000x Stake

Bonus

Free Spins

Platform

iOS, Android, Web

How to Play Guide

Register or Log In

Start your journey by creating an account. Click the register button to join JL99 Casino and access the full library of premium slots including Book of King Arthur.

Secure Deposit

Navigate to the cashier section and make a deposit using GCash, PayMaya, or Bank Transfer. Ensure you have balance to place your legendary bets.

Find the Game

Use the search bar in the casino lobby to find "Book of King Arthur" or browse the Microgaming provider category to launch the game instantly.

Set Bet & Spin

Adjust your coin size to suit your budget. Once ready, hit the spin button or use the auto-play feature to start your quest for the Holy Grail of wins.

Winning Tips & Strategies

Manage Your Bankroll

Book of King Arthur is a high-volatility slot. It is wise to set a budget and use smaller bet sizes to sustain your play until the bonus rounds trigger.

Learn the Paytable

King Arthur is the highest paying symbol. Familiarize yourself with the symbol values so you know exactly which combinations lead to the 5,000x jackpot.

Utilize the Boost Feature

If your balance allows, consider using the Boost feature. It increases your stake but makes the expanding symbols Wild, significantly increasing win potential.

Chase the Free Spins

The real riches of Book of King Arthur lie in the Free Spins. Landing 3 Scatters is your priority, as the expanding symbols guarantee payouts across all 10 lines.

Player Reviews

PinoySlotMaster

"Book of King Arthur is my go-to game on JL99! I hit the free spins round yesterday and the expanding King Arthur symbol covered the whole screen. Huge win!"

March 10, 2026

ManilaQueen77

"Love the theme and the graphics are amazing on the JL99 app. It's high volatility so be careful, but when it pays, it pays big. Very exciting gameplay!"

February 28, 2026

LegendaryBettor

"The best version of the Book mechanic I've played. The Boost feature in Book of King Arthur makes a huge difference compared to other slots. 5 stars for JL99."

January 15, 2026

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Frequently Asked Questions

What is Book of King Arthur?

Book of King Arthur is a legendary-themed online slot game available at JL99 Casino. It brings the tales of Camelot to life on a 5x3 reel set with 10 paylines. Players join King Arthur in a quest for hidden riches, utilizing the famous 'Book of' mechanic where a single symbol acts as both a Wild and a Scatter to trigger epic bonuses.

What is the RTP of Book of King Arthur?

The Book of King Arthur slot features a competitive Return to Player (RTP) of 96.1%. Combined with its high volatility, this means the game is designed for players at JL99 who enjoy the thrill of chasing substantial payouts rather than frequent small wins. It offers a balanced mathematical model for professional slot enthusiasts.

Can I play Book of King Arthur for free?

Yes, you can experience Book of King Arthur in demo mode at JL99 Casino. This allows you to familiarize yourself with the Round Table features and expansion mechanics without risking real money. Once you are comfortable with the gameplay, you can easily switch to real money mode by logging into your JL99 account.

What are the special features of Book of King Arthur?

Book of King Arthur is packed with lucrative features including Free Spins with a randomly selected Expanding Symbol. During the bonus round, these symbols can cover entire reels to create massive wins. Additionally, the game includes a 'Boost' feature that increases the value of expanding symbols, making it a favorite for high-stakes players in the Philippines.

How can I win at Book of King Arthur?

Winning at Book of King Arthur requires landing three or more matching symbols on any of the 10 active paylines. The key to massive success is triggering the Free Spins feature by landing three 'Book' symbols. At JL99, we recommend managing your bankroll carefully due to the game's high volatility to ensure you have enough spins to hit the bonus round.

18+

Play Responsibly

Gaming should be fun and entertaining. Please set limits for your play and never bet more than you can afford to lose. If you feel you need help, contact our support team or visit dedicated gambling support resources.