Title
Developer
Rating
RTP
99%
Daily
68.18%
Weekly
62.76%
Cold
Book of 99 can be enjoyed on both desktop and mobile, making it a versatile choice for players on the go. If you’re new to the game or the Greek mythology theme, you can try out the Razed of 99 demo first to get a feel for the gameplay before wagering real money. By exploring the free spins feature and understanding the collection mechanic, you’ll be prepared for a seamless experience when playing with your preferred currency.
New to Greek-themed slots? Don’t worry! Our guide on slot paylines and how to play will help you get started. Plus, you can learn more about playing online at your favorite casinos.
The theme of Book of 99 takes you straight into the heart of Ancient Greece, a place filled with gods, legends, and epic quests. With cascading reels and high-quality visuals, the game creates an immersive atmosphere. The reels are adorned with symbols inspired by Greek mythology, including the iconic Book symbol, which has become a staple of many slot games.
The graphics and soundtrack perfectly complement the theme, bringing the rich history and mysticism of ancient Greece to life. Along with low- and high-paying symbols, the reels also feature special symbols that trigger exciting features, making this slot a standout title from Razed Gaming.
Razed of 99 offers an array of exciting features designed to keep you on the edge of your seat. Here's a breakdown of the key features:
Wild Symbols: The Book symbol acts as the wild in this game, substituting for all other symbols except the special expanding symbol that appears during free spins.
Free Spins Feature & Scatter Symbols: The wild symbol also doubles as the scatter, triggering the free spins round. Landing 3 or more wilds will award you 10 free spins. During this bonus round, a special expanding symbol is randomly selected. This symbol can expand to fill the entire reel, paying out across all 10 paylines, even if the symbols are not connected from left to right.
Collection Feature: Every wild symbol that lands on the reels during the base game contributes to the collection meter. Once the meter reaches 99 collected wild symbols, the free spins feature is triggered. The free spins awarded through the collection feature will be played with a bet size corresponding to the average bet used during the collection phase.
Bet Sizes, Max Win & RTP According to Roobet Casino Book of 99 offers the following to players:
Bet size: 0.10/100
Max Win: 12,075x
RTP (Return to Player): 99%
Volatility: High
Overall, Book of 99 from Relax Gaming offers an engaging and rewarding experience with a perfect blend of classic Greek mythology and modern slot features. While the base game offers solid gameplay, it’s the collection mechanic and free spins feature that really make this slot stand out. The expanding symbols and the chance to win up to 12,075x your stake create an atmosphere of anticipation throughout the game.
The ability to trigger the free spins through the collection feature adds an extra layer of excitement and strategy to the game, as every wild symbol you land brings you closer to those coveted free spins. With its high RTP and potential for big wins, Razed of 99 is a must-try for fans of Greek mythology and anyone looking for a slot with serious payout potential.
If you want the best place to play Deep Descent, Roobet is our top recommendation. With instant signup, fast crypto deposits, and a massive library of Relax Gaming titles, Roobet delivers one of the smoothest slot experiences online. You’ll also find exclusive promotions, Roobet Rewards, and 24/7 live support making it the ideal home for spinning Book of 99 with confidence and convenience
Before diving into Deep Descent, take advantage of our SlotEssentials tools designed to help you track, analyze, and optimize your gameplay. Use the Record Win Tracker to log your biggest hits, the Session Tracker to monitor performance, and the Bonus Hunt Tracker for high‑volatility sessions. You can also explore our Random Slot Generator, Hot & Cold Slots, and other free tools to get the most out of your time playing Deep Descent.
When you play Book of 99 through our exclusive ELITE affiliate code, you unlock an additional layer of benefits: access to our $50K Monthly Leaderboard, exclusive Sign Up Bonuses, and our Slotessentials Wager Milestones. Plus, you’ll be supported by the SlotEssentials VIP Team, offering personalized guidance, priority assistance, and exclusive community perks — giving you one of the most profitable and rewarding ways to play anywhere online.
Hit a Max Win on Deep Descent? You can claim your official Max Win Merch directly through SlotEssentials. Simply record your win on the Max Win Merch page, upload your proof, and submit your claim. Once verified, you’ll receive exclusive merch celebrating your achievement — including Max Win badges and limited‑edition apparel. It’s the perfect way to showcase your biggest Book of 99 moment.
