Here2Win Casino · SYNOT Games · Australia
The Pokies Baron page for Book of Secrets Extra
Australian punters can open the session page for Book of Secrets Extra pokie apart from this catalogue.
Pokies Baron files Book of Secrets Extra as a SYNOT Games pokie for Australia and sends the session to Here2Win Casino. The card has no published RTP, so this preview does not invent one.
Published figures & technical specs
- Studio
- SYNOT Games (168 in this catalogue)
- Features
- Expanding Symbols
- Studio average RTP
- 95.99% (across 17 titles)
- Reel grid
- 5×3 classic video grid
- Pay structure
- 10 paylines
- RNG testing labs
- Independent RNG & math verification (GLI / iTech Labs / BMM Testlabs standards)
- Studio licences
- Certified RNG for regulated international casino markets
- Platform
- HTML5 (Desktop, iOS & Android)
- Play at
- Here2Win Casino
- Stake
- A$
- Card updated
- 2026-11-04
Book of Secrets Extra RTP (studio benchmark), house edge & 500-spin session math
Book of Secrets Extra by SYNOT Games benchmarks against the verified 95.99% studio average RTP (4.01% house margin across 17 titles) and suits a 200x–250x stake buffer in A$ at Here2Win Casino (here2win.com.au).
Because the source card for Book of Secrets Extra omits an individual percentage, this SYNOT Games release is benchmarked against the studio's published range (95.90% to 96.05%). The pokie runs on a 5×3 classic video grid layout, and its variance profile fits a 200x–250x unit-stake reserve when playing Book of Secrets Extra in A$ at Here2Win Casino (here2win.com.au).
| Session volume & entity | Total turnover | Theoretical return | House margin | Est. winning spins |
|---|---|---|---|---|
| 100 spins on Book of Secrets Extra (A$1/spin @ 95.99% RTP) | A$100 | A$95.99 | A$4.01 | ~27–33 |
| 250 spins on Book of Secrets Extra (A$1/spin @ 95.99% RTP) | A$250 | A$239.97 | A$10.03 | ~68–83 |
| 500 spins on Book of Secrets Extra (A$1/spin @ 95.99% RTP) | A$500 | A$479.95 | A$20.05 | ~135–165 |
Pros and cons
Pros
- SYNOT Games is on the card, not buried in a lobby.
- The play button stays on pokiesbaron.com and then opens Here2Win Casino.
- SYNOT Games has 168 pokies in this catalogue.
Cons
- This page is a catalogue. It does not hold an A$ balance.
- A match amount is not a fact of the Book of Secrets Extra card.
- The return gap is left empty on purpose.
- Volatility is not on the source card.
At Here2Win Casino
Here2Win Casino is the casino on this card. Beside Book of Secrets Extra the provider page lists 168 other SYNOT Games pokies, all played at Here2Win Casino.
If the studio is the part you came for, Chilli Joker is the other SYNOT Games pokie named here.
Filed under
Features Expanding Symbols
What this pokie is
Pokies Baron keeps the entry short. Book of Secrets Extra is a SYNOT Games pokie for Australia, opened at Here2Win Casino. No extra adjective is doing the work of a fact.
Book of Secrets Extra is filed under video on the Australian list Pokies Baron keeps for Here2Win Casino. Nothing on this page is a pub pokie with a local sticker. PayID, POLi and the usual cards are the payment names Australian punters already know.
A normal session on Book of Secrets Extra is a run of spins with a stake you picked, not a plan to clear a bonus. Here2Win Casino may show its own welcome offer inside the account. Read the offer there before you opt in.
Book of Secrets Extra technical specs, SYNOT Games RNG audit & myth-busting rules
Book of Secrets Extra is engineered by SYNOT Games on a 5×3 classic video grid (10 paylines) architecture with independent RNG certification from Independent RNG & math verification (GLI / iTech Labs / BMM Testlabs standards) under Certified RNG for regulated international casino markets regulatory frameworks.
SYNOT Games (SYNOT Games Studio) is an iGaming studio headquartered in International iGaming Studio. Its random number generators (RNG) and math sheets are audited by Independent RNG & math verification (GLI / iTech Labs / BMM Testlabs standards) and certified across Certified RNG for regulated international casino markets. Studio RTP policy: Published per-title theoretical RTP where provided on the studio sheet.
In the Pokies Baron catalogue, SYNOT Games accounts for 168 pokies, playable at Here2Win Casino (here2win.com.au). Across the 17 titles with a published return, the studio averages 95.99% RTP (spanning 95.90% to 96.05%, with 0 pokies at 96.5% or above). Signature studio mechanics include HTML5 video slot math, mobile-first reel layouts, and bonus feature triggers.
Expanding Symbols: Expanding symbol mechanics select one or more pay symbols that stretch vertically to cover the full reel when enough instances land.
Book of Secrets Extra vs SYNOT Games average & peer pokie comparison
Compared against direct studio and mechanic peers, Book of Secrets Extra (studio benchmark) benchmarks directly against Ballad of Bardolomew (96.05%, SYNOT Games) across its 5×3 classic video grid layout at Here2Win Casino (here2win.com.au).
| Title & spec anchor | Studio | Published RTP | Delta vs Book of Secrets Extra | Volatility | Grid |
|---|---|---|---|---|---|
| Book of Secrets Extra (this card) | SYNOT Games | — | — | — | 5×3 classic video grid |
| Ballad of Bardolomew 96.05% RTP pokie · Highest RTP in SYNOT Games vs Book of Secrets Extra | SYNOT Games | 96.05% | — | — | 5×3 / 5×4 HTML5 video grid |
| Rise of Coins 96.00% RTP medium-to-high pokie · Higher-volatility studio alternative vs Book of Secrets Extra | SYNOT Games | 96.00% | — | medium-to-high | 5×3 / 5×4 HTML5 video grid |
| Book of Bonanza 97.60% RTP medium-to-high pokie · Same mechanic (Expanding Symbols) vs Book of Secrets Extra | SmartSoft | 97.60% | — | medium-to-high | 5×3 classic video grid |
- Alongside Book of Secrets Extra (studio benchmark), review the Ballad of Bardolomew 96.05% SYNOT Games pokie card available at Here2Win Casino.
- Alongside Book of Secrets Extra (studio benchmark), review the Rise of Coins 96.00% SYNOT Games pokie card available at Here2Win Casino.
- Benchmark any two releases in the head-to-head pokie RTP and volatility comparator or run the A$ session bankroll and stake calculator.
More from SYNOT Games
Questions
Does Here2Win Casino list Book of Secrets Extra for Australian punters?
Yes. Pokies Baron links Book of Secrets Extra to Here2Win Casino for Australian players. The button on this page stays on pokiesbaron.com and then opens the pokie at Here2Win Casino.
What provider is behind Book of Secrets Extra?
The provider is SYNOT Games. Other SYNOT Games pokies on Pokies Baron sit on the same provider page if you want a neighbour title.
Does Pokies Baron take the stake?
Pokies Baron is a catalogue. The stake in A$ is placed at Here2Win Casino after you follow the play button. This page does not hold a balance.
Can I open Book of Secrets Extra on a phone?
Yes. The play button on pokiesbaron.com is the same on a phone as on a desktop. The session then runs at Here2Win Casino, and the stake is still in A$.
What currency is the stake on Book of Secrets Extra?
At Here2Win Casino the stake for Australian players is in A$. Pokies Baron does not convert it and does not print a minimum, because the minimum is set inside the game.
Is there a demo of Book of Secrets Extra on this page?
No. Pokies Baron does not embed a demo of Book of Secrets Extra. The button opens the pokie at Here2Win Casino. Any practice mode, if one exists, is inside that account, not on pokiesbaron.com.
Why is there no star rating for Book of Secrets Extra?
No score is printed on purpose. A star would be a house opinion. The page sticks to the studio, the published RTP when the card has one, and the volatility label.
Does Book of Secrets Extra remember my last session?
Nothing on this page is a timer for a feature. If the last session went badly, the next one does not owe you the difference.
How old do I have to be to play Book of Secrets Extra?
The page is written for adults in Australia. Gambling can harm. Stop when the session stops being a choice.
What does the play button actually do?
The click stays on pokiesbaron.com first, then opens Book of Secrets Extra at Here2Win Casino. The partner address is not printed in the article.
How many SYNOT Games pokies are in this catalogue?
Pokies Baron lists 168 pokies from SYNOT Games for Australia. Book of Secrets Extra is one of them. The provider page holds the rest.
Is Book of Secrets Extra different in another Australian city?
Sydney or Perth sees the same card. The only local pieces are the language, the A$ stake and the payment names such as PayID.
Will I see a bonus figure for Book of Secrets Extra here?
No figure is invented here. If Here2Win Casino shows a welcome offer, it shows it inside the account, with its own terms. Read them there before you opt in.
Is this the same machine I would find in a club?
The page describes the online title from SYNOT Games. It does not claim a venue in Perth.
When should I close Book of Secrets Extra?
Set an A$ limit and a clock before the first spin, then close the game when either one is reached. Book of Secrets Extra will not close itself.
Why is there no RTP for Book of Secrets Extra?
No estimate is offered. An invented RTP would make the catalogue worse. The studio is still SYNOT Games, and play is still at Here2Win Casino.
Why does Book of Secrets Extra have a pros and cons list?
It splits what the card publishes from what Pokies Baron refuses to invent. A printed RTP is listed because it is a source figure. A missing hit rate is named as a limit, not filled in.
Which part of the Book of Secrets Extra page is the preview?
Start with the short answer under the title, then the fact list. Both should agree: studio SYNOT Games, and RTP only when the card has one. The pros and cons repeat that split in plain lines.
Will a shorter name still open Book of Secrets Extra?
Use the full name on this card. A shorter search in the Here2Win Casino lobby can open a different SYNOT Games title.
How many reels and paylines does Book of Secrets Extra have?
The card does not publish a maximum win, a reel count, or a payline count. Pokies Baron does not guess them.
Which feature labels are on Book of Secrets Extra?
The labels are Expanding Symbols. They are names only. This page does not add a bonus amount, a free-spin count, or a jackpot figure.
Stake and the cashier
The Baron page does not list a cashier. A$ deposits, including PayID, sit inside Here2Win Casino.
The rails are handled after you reach Here2Win Casino. pokiesbaron.com does not take the deposit. This page never opens a cashier.
How to play Book of Secrets Extra at Here2Win Casino: 7-step session protocol
- Check the verified Book of Secrets Extra return (95.99%) and SYNOT Games 5×3 classic video grid layout on this Pokies Baron specification card.
- Size your A$ session bankroll at 200x–250x your base spin stake using the interactive 100/250/500-spin calculator above.
- Open Here2Win Casino (here2win.com.au) and locate Book of Secrets Extra using the SYNOT Games studio filter or instant search bar.
- Launch Book of Secrets Extra and open the in-game help sheet ("?" or "i" icon) to verify the active paytable, feature rules, and printed RTP.
- Select your unit spin stake in A$ (such as A$0.20–A$1.00) so your session balance comfortably covers 200 to 300 spins.
- Lock in a session timer and stop-loss limit at Here2Win Casino prior to spinning, keeping stake size flat through normal variance swings.
- Complete account KYC verification at Here2Win Casino early and use the same verified PayID rail for seamless A$ withdrawals.
The studio behind it
SYNOT Games is the studio printed on Book of Secrets Extra. Pokies Baron lists 168 of their pokies for Australia, and this is one of them. Open that page if you want a neighbour title from the same studio.
How a session behaves
A session at Pokies Baron is described as a limit and a stop, not as a story. Book of Secrets Extra either fits that or it does not.
A fair session on Book of Secrets Extra is a run of spins you can afford to lose, not a plan to clear a welcome offer. Pokies Baron does not print a bonus figure it does not hold.
Who it suits
This card does not carry a volatility mark, so Pokies Baron does not guess who Book of Secrets Extra suits. The studio is SYNOT Games. The session still opens at Here2Win Casino.
Playing this pokie
Search the lobby for Book of Secrets Extra, the full title on this card. A shorter search can load a different SYNOT Games title.
The card does not publish a maximum win, a reel count, a payline count, a count of free spins, or a bonus-buy price. Pokies Baron leaves those fields empty.
Australian punters play this pokie in the browser at Here2Win Casino, stake in A$. pokiesbaron.com does not host the reels.
Feature labels on this card: Expanding Symbols. Pokies Baron does not add a jackpot figure or a bonus amount on top of those names.