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Book Of SpinOWeen — slot review
Book Of SpinOWeen is a slot by Spinomenal (released 2023) with an RTP of 96.01%, high volatility. Theme: Halloween, Horror.
RTP 96.01%High volatility5 reels
Free demo
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Demo mode uses a virtual balance and pays no real winnings. It is meant for getting familiar with the game.
Specifications
| Provider | Spinomenal |
| Release year | 2023 |
| RTP | 96.01% |
| Volatility | High volatility |
| Reels | 5 reels |
| Paylines | fixed paylines |
| Theme | Halloween, Horror |
Why the RTP at a casino may differ
Providers ship the same game in several return configurations, and each casino picks which version it runs. Across the market the spread typically runs 2–8 percentage points below the headline figure. The number here is the provider specification — the version actually running is shown inside the game, in its rules screen.
Book Of SpinOWeen review
Book Of SpinOWeen combines the familiar "book" slot format with a Halloween and horror theme, released by Spinomenal in 2023. It has five reels and fixed paylines. RTP of 96.01% is nearly level with the catalogue median of 96.06%, and volatility is rated high. No maximum win figure is listed, so the ceiling can't be measured against the catalogue. No mechanics such as Megaways or a bonus buy are recorded.
Where to play Book Of SpinOWeen
Top-rated casinos from our ranking that carry Spinomenal games in their catalog:
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Similar Spinomenal slots
See also
This review was prepared by the Casino Atlas editorial team. Last updated: July 2026. Specs are based on provider data; the RTP version may differ at a specific casino.