Here2Win Casino · Spinomenal · New Zealand
Mottle Fen entry for Book of Sirens
Kiwi players can open the session page for Book of Sirens pokie apart from this catalogue.
For New Zealand, Mottle Fen lists Book of Sirens as a Spinomenal pokie opened at Here2Win Casino. The source card has no RTP, and this page does not borrow one.
What this pokie is
Mottle Fen writes the Book of Sirens entry for this host. Spinomenal made it. Here2Win Casino is where it is played. The stake shows as NZ$.
Payments people in New Zealand already use, POLi among them, are handled inside the Here2Win Casino account. mottlefen.org never asks for them. The page cannot run the rail.
The fact list and the pros and cons are the card, written out. Book of Sirens is from Spinomenal. Here2Win Casino is where the pokie runs, in NZ$.
The rest of the Spinomenal list includes Werewolf The Hunt.
Studio
Spinomenal is the studio on the card. 719 of their pokies are in this New Zealand catalogue. Each one hands off through mottlefen.org to Here2Win Casino.
Book of Sirens technical specs, Spinomenal RNG audit & myth-busting rules
Book of Sirens is engineered by Spinomenal on a 5×3 classic video grid (10 paylines) architecture with independent RNG certification from BMM Testlabs, eCOGRA under MGA, UKGC, ONJN, Spelinspektionen, HGC regulatory frameworks.
Spinomenal (Spinomenal Ltd) is an iGaming studio founded in 2014 and headquartered in Tel Aviv, Israel & Malta. Its random number generators (RNG) and math sheets are audited by BMM Testlabs, eCOGRA and certified across MGA, UKGC, ONJN, Spelinspektionen, HGC. Studio RTP policy: Configurable RTP tiers (96.00%–96.30% primary setting).
In the Mottle Fen catalogue, Spinomenal accounts for 719 pokies, playable at Here2Win Casino (here2win.com.au). Across the 106 titles with a published return, the studio averages 95.96% RTP (spanning 95.42% to 96.44%, with 0 pokies at 96.5% or above). Signature studio mechanics include Demi Gods Series, Synced Reels, Expanding Wilds, Buy Feature, Retro Reels.
Expanding Symbols: Expanding symbol mechanics select one or more pay symbols that stretch vertically to cover the full reel when enough instances land.
At Here2Win Casino
Book of Sirens is a Spinomenal pokie at Here2Win Casino for New Zealand. Mottle Fen records the figures. The game opens at Here2Win Casino, stake in NZ$.
Published figures & technical specs
- Studio
- Spinomenal (719 in this catalogue)
- Features
- Expanding Symbols
- Studio average RTP
- 95.96% (across 106 titles)
- Reel grid
- 5×3 classic video grid
- Pay structure
- 10 paylines
- RNG testing labs
- BMM Testlabs, eCOGRA
- Studio licences
- MGA, UKGC, ONJN, Spelinspektionen, HGC
- Platform
- HTML5 (Desktop, iOS & Android)
- Play at
- Here2Win Casino
- Stake
- NZ$
- Card updated
- 2026-11-04
Book of Sirens RTP (studio benchmark), house edge & 500-spin session math
Book of Sirens by Spinomenal benchmarks against the verified 95.96% studio average RTP (4.04% house margin across 106 titles) and suits a 200x–250x stake buffer in NZ$ at Here2Win Casino (here2win.com.au).
Book of Sirens does not carry a standalone RTP on its source sheet, so Mottle Fen cites the verified studio distribution instead of guessing. 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 Sirens in NZ$ at Here2Win Casino (here2win.com.au).
| Session volume & entity | Total turnover | Theoretical return | House margin | Est. winning spins |
|---|---|---|---|---|
| 100 spins on Book of Sirens (NZ$1/spin @ 95.96% RTP) | NZ$100 | NZ$95.96 | NZ$4.04 | ~27–33 |
| 250 spins on Book of Sirens (NZ$1/spin @ 95.96% RTP) | NZ$250 | NZ$239.90 | NZ$10.10 | ~68–83 |
| 500 spins on Book of Sirens (NZ$1/spin @ 95.96% RTP) | NZ$500 | NZ$479.80 | NZ$20.20 | ~135–165 |
Pros and cons
Pros
- Spinomenal is the studio on the card.
- The button remains on mottlefen.org and hands the pokie to Here2Win Casino.
- There are 719 Spinomenal pokies in this catalogue.
Cons
- Mottle Fen does not hold NZ$ and does not pay winners.
- If Here2Win Casino has an offer, its terms are shown there.
- A neighbour title's RTP is not copied across.
- Volatility was not on the source card.
Book of Sirens vs Spinomenal average & peer pokie comparison
Compared against direct studio and mechanic peers, Book of Sirens (studio benchmark) benchmarks directly against Luxury Club (96.44%, Spinomenal) across its 5×3 classic video grid layout at Here2Win Casino (here2win.com.au).
| Title & spec anchor | Studio | Published RTP | Delta vs Book of Sirens | Volatility | Grid |
|---|---|---|---|---|---|
| Book of Sirens (this card) | Spinomenal | — | — | — | 5×3 classic video grid |
| Luxury Club 96.44% RTP medium-to-high pokie · Highest RTP in Spinomenal vs Book of Sirens | Spinomenal | 96.44% | — | 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 Sirens | SmartSoft | 97.60% | — | medium-to-high | 5×3 classic video grid |
- Alongside Book of Sirens (studio benchmark), review the Luxury Club 96.44% Spinomenal pokie card available at Here2Win Casino.
- Alongside Book of Sirens (studio benchmark), review the Book of Bonanza 97.60% SmartSoft pokie card available at Here2Win Casino.
- Benchmark any two releases in the head-to-head pokie RTP and volatility comparator or run the NZ$ session bankroll and stake calculator.
More from Spinomenal
Who it suits
The card has no volatility mark. Mottle Fen leaves that gap empty instead of guessing a fit for Book of Sirens. The session, if you open it, is at Here2Win Casino.
How a session moves
Mottle Fen will not tell you the next outcome is due. Book of Sirens does not keep a score of how careful you were.
The long sample behind an RTP, when one is printed, is not one evening. A catalogue cannot close it for you.
Questions
Can Kiwi players open Book of Sirens at Here2Win Casino?
Here2Win Casino plays it. Mottle Fen is the New Zealand catalogue. The button leaves via mottlefen.org and opens Book of Sirens at Here2Win Casino, stake in NZ$.
Who built this pokie?
Spinomenal. Other Spinomenal pokies for New Zealand are grouped on the provider page.
Where do I deposit NZ$?
Deposit at Here2Win Casino after the button. POLi can be offered there. Mottle Fen only names it so the page is clearly the New Zealand catalogue.
Does Book of Sirens work on mobile in New Zealand?
Yes. The button on mottlefen.org is the same on a phone. Here2Win Casino loads the pokie, and the stake is in NZ$.
Is the stake in NZ$?
NZ$ at Here2Win Casino. This catalogue does not print a minimum, because that figure lives inside the game, not on the card.
Can I play Book of Sirens on this page?
The card is for reading. The session is not hosted on mottlefen.org.
Where is the rating for this pokie?
There is no rating. A score would be an opinion Mottle Fen refuses to invent. The useful lines are the studio, the RTP when it exists, and the volatility.
Can Book of Sirens be due to pay?
Do not wait out a feature. The pokie is not running late.
Who is Book of Sirens for?
Adults, 18+. Mottle Fen is a New Zealand catalogue. Gambling can harm, and the page is not a promise of winnings.
What happens when I press play on Book of Sirens?
mottlefen.org takes the click and Here2Win Casino opens the pokie. The partner address stays off the article.
How many Spinomenal pokies are on this site?
719. They are grouped on the provider page. Book of Sirens is a single title in that group, played at Here2Win Casino.
Does Dunedin change the pokie?
No. The same Book of Sirens card applies across New Zealand. City is not a reel setting. NZ$ and POLi are the local pieces, and both are settled at Here2Win Casino.
Is a bonus amount listed for Book of Sirens?
No amount is printed here. A welcome offer, if Here2Win Casino has one, is shown in the account with its own terms. Mottle Fen will not guess the numbers.
Is Book of Sirens a pub pokie?
No. It is an online pokie from Spinomenal, opened at Here2Win Casino. The page does not describe a machine in a venue.
How do I finish a session?
Decide the NZ$ limit before the reels move, then stop when it is reached. Book of Sirens will not tap you on the shoulder.
Why does Book of Sirens have no RTP?
The source card did not publish one. The gap stays empty. A figure is not copied from another pokie to make the page look finished.
Why list pros and cons for Book of Sirens?
It is not a rating of Book of Sirens. A pro means the card or the catalogue actually supports the line. A con means a missing figure or a limit of this page.
Is the text under the title the preview?
Yes. That short answer is the preview, and it should match the fact list: Spinomenal, and only when you are on a card that has an RTP. Pros and cons come after, in plainer lines.
Will a shorter name still open Book of Sirens?
This page is only Book of Sirens. The play button follows that name, not a shorter guess.
What is the maximum win on Book of Sirens?
A count of free spins and a bonus-buy price are also absent. Those numbers stay off the page.
Which feature labels are on Book of Sirens?
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 POLi
The NZ$ movement, POLi included, happens at Here2Win Casino. This page only names it.
The NZ$ stake is chosen in the game at Here2Win Casino. Reading Mottle Fen does not open a balance.
How to play Book of Sirens at Here2Win Casino: 7-step session protocol
- Check the verified Book of Sirens return (95.96%) and Spinomenal 5×3 classic video grid layout on this Mottle Fen specification card.
- Size your NZ$ 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 Sirens using the Spinomenal studio filter or instant search bar.
- Launch Book of Sirens 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 NZ$ (such as NZ$0.20–NZ$1.00) so your session balance comfortably covers 200 to 300 spins.
- Lock in a session timer and stop-loss limit at Here2Win Casino prior to spinning, keeping stake size flat through normal variance swings.
- Complete account KYC verification at Here2Win Casino early and use the same verified POLi rail for seamless NZ$ withdrawals.
Filed under
Features Expanding Symbols
Playing this pokie
Search the lobby for Book of Sirens, the full title on this card. This page is only the Book of Sirens card.
The card does not publish a maximum win, a reel count, a payline count, a count of free spins, or a bonus-buy price. Mottle Fen leaves those fields empty.
Kiwi players play this pokie in the browser at Here2Win Casino, stake in NZ$. No app is installed from Mottle Fen.
Book of Sirens is tagged Expanding Symbols. Those words are the only feature facts on the card.