Egypt Book of Mystery on 177 Bat brings the ancient world to life on a 5-reel grid. Pharaohs, scarabs, golden ankhs, and the legendary Book symbol — land the right combination and the expanding symbol mechanic can turn a single free spins round into a session-defining win.
Every symbol in Egypt Book of Mystery is drawn from ancient Egyptian iconography. The premium symbols carry the highest payouts, while the card-rank symbols fill the lower end of the paytable. The Book symbol is the most important — it acts as both Wild and Scatter.
Symbol representations are illustrative. Actual in-game visuals may vary.
Payouts below are multipliers of your line bet. The Book symbol pays on any position when acting as Wild, and triggers Free Spins when 3 or more appear as Scatter.
| Symbol | 3 of a Kind | 4 of a Kind | 5 of a Kind |
|---|---|---|---|
| 📖 Book (Wild/Scatter) | 2× | 20× | 200× |
| 👑 Pharaoh | 5× | 40× | 500× |
| 🦅 Horus | 4× | 30× | 400× |
| 🐱 Bastet | 3× | 20× | 250× |
| 🪲 Scarab | 2× | 15× | 150× |
| ☥ Ankh | 2× | 10× | 100× |
| 🏺 Canopic Jar | 1× | 5× | 50× |
| A / K / Q | 0.5× | 3× | 25× |
The game's mechanics are built around the Book symbol and the expanding symbol system. Here's a breakdown of every feature you'll encounter when playing on 177 Bat.
The Book symbol serves a dual role. In the base game it substitutes for all other symbols to complete winning combinations. Land 3, 4, or 5 Books anywhere on the reels and you trigger the Free Spins round — no specific payline required.
Triggering 3 or more Books awards 10 free spins. Before the round begins, one symbol is randomly selected as the Special Expanding Symbol. Whenever that symbol appears during free spins, it expands to fill the entire reel — dramatically increasing win potential across all 10 paylines.
Landing 3 or more Book symbols during the free spins round retriggers the feature and adds another 10 spins to your total. The expanding symbol stays the same throughout the entire free spins session, including any retriggered spins.
When the expanding symbol lands on a reel during free spins, it covers all 3 rows of that reel. If the same symbol lands on multiple reels simultaneously, each one expands independently. A full board of the Pharaoh symbol — the highest-paying premium — is the path to the 5,000× maximum win on 177 Bat.
Players on 177 Bat can skip the base game and purchase direct entry into the Free Spins round using the Buy Bonus feature. The cost is 100× your current total bet. The expanding symbol is still randomly selected, and the RTP of the purchased round matches the naturally triggered version.
Egypt Book of Mystery runs smoothly on Android and iOS through the 177 Bat mobile site. The reel animations, expanding symbol effects, and free spins transitions all perform well on standard mobile data connections without needing a dedicated app download.
Egypt Book of Mystery is one of those slots that has earned its reputation through a mechanic that genuinely delivers. The expanding symbol during free spins isn't just a visual effect — it fundamentally changes the payout structure of every spin in the round. When the randomly selected symbol happens to be the Pharaoh or Horus, and that symbol lands on three or more reels simultaneously, the payouts can be extraordinary. That's the core appeal of this game and why it remains one of the most played slots on 177 Bat.
The base game is relatively straightforward. You're spinning 5 reels across 10 fixed paylines, watching for premium symbol combinations and keeping an eye out for the Book. The Book appearing on reels 1, 3, and 5 is the trigger most players are waiting for — three Books anywhere on the grid is enough to start the free spins round regardless of payline position.
What makes Egypt Book of Mystery different from many other Egypt-themed slots is the randomness of the expanding symbol selection. You don't know which symbol will be chosen before the free spins begin. Sometimes it's a low-value card symbol, which leads to a modest round. Other times it's the Pharaoh, and the entire session can shift in those 10 spins. That unpredictability is part of what keeps the game engaging across long sessions on 177 Bat.
The volatility is high, which is consistent with the Book-style slot format. You can go through a stretch of base game spins without hitting the trigger, and then land a free spins round where the expanding Pharaoh covers four reels and pays out 300× your bet in a single spin. Managing your bankroll with this in mind is important — starting with a bet size that gives you enough spins to reach the free spins trigger is a sensible approach for most players on 177 Bat.
The 95.97% RTP is competitive for a high-volatility slot. It's slightly lower than some other games on 177 Bat, but the maximum win potential of 5,000× your bet compensates for that. The game is certified and the RTP is consistent — 177 Bat does not modify game parameters based on player history or account balance.
Deposits on 177 Bat are processed through bKash, Nagad, and Rocket. The minimum deposit is ৳200 and the minimum bet in Egypt Book of Mystery is ৳10 per spin. Withdrawals are processed back to your mobile banking account and typically complete within five minutes. There are no withdrawal fees on 177 Bat for standard transactions.
The expanding symbol is chosen randomly before free spins begin. There's no way to influence which symbol is selected, but if the Pharaoh or Horus is chosen, consider using the retrigger opportunity aggressively — landing 3 more Books during a high-value expanding symbol round is one of the best outcomes possible in this game on 177 Bat.
Given the high volatility, a session budget of at least 100× your bet per spin gives you a reasonable number of spins to reach the free spins trigger. If you're using the Buy Bonus feature at 100× your bet, factor that into your session budget separately.
The 5,000× maximum win requires the Pharaoh to be selected as the expanding symbol, land on all 5 reels during free spins, and for the Book Wild to complete any remaining paylines. It's rare, but it has happened on 177 Bat — and the free spins retrigger keeps the possibility alive for longer sessions.
New to 177 Bat or new to Book-style slots? Here's the complete process from registration to your first free spins trigger.
Sign up with your phone number. No bank account needed — the whole process takes under two minutes and you can start playing immediately after verifying your number.
Fund your wallet using your preferred mobile banking app. Minimum deposit is ৳200 and funds appear in your 177 Bat account instantly.
Navigate to the slots section on 177 Bat and search for Egypt Book of Mystery. The game loads directly in your browser — no download required on mobile or desktop.
Use the bet controls to choose your stake. The minimum is ৳10 per spin across all 10 paylines. For high-volatility slots, starting at a lower bet and building up is a reasonable approach.
Spin and look for the Book appearing on 3 or more reels. When it does, the free spins round begins and a special expanding symbol is randomly selected for the round.
Cash out your winnings at any time. Withdrawals from 177 Bat process within five minutes to your mobile banking account with no fees on standard transactions.
Very High (5/5) — Infrequent wins, but the expanding symbol mechanic can deliver exceptional payouts in a single free spins round.
All the key numbers and features in one place for players on 177 Bat.
| Specification | Detail | Available on 177 Bat |
|---|---|---|
| Reel Layout | 5 reels × 3 rows | |
| Paylines | 10 fixed paylines | |
| RTP | 95.97% | |
| Volatility | Very High | |
| Maximum Win | 5,000× total bet | |
| Minimum Bet | ৳10 per spin | |
| Free Spins | 10 spins (retriggerable) | |
| Expanding Symbol | Random selection per round | |
| Buy Bonus | 100× total bet | |
| Mobile Play | Android & iOS browser | |
| BDT Deposits | bKash, Nagad, Rocket |
Answers to what players ask most often about this slot on 177 Bat.
Join 177 Bat today and spin Egypt Book of Mystery with BDT deposits via bKash or Nagad. High volatility, 5,000× max win, and a free spins round that can rewrite your session with a single expanding symbol.