Tome of Madness Return:
from 84.50% to 96.59%
Listed RTP builds span 84.50%–96.59%. This card stores 96.59% as the displayed RTP and the top of that published range.
Tome of Madness Demo & Slot Review
Tome of Madness is a Play'n GO 5×5 cascading cluster slot in which winning symbols charge a Portal toward Special Wilds, Abyss, Void and the Other World Free Round. The trade-off is a very-high-volatility ladder with a published maximum exposure of 2,000× total bet.
Demo availability may vary by location. You must meet the legal age in your jurisdiction; the free-play button does not record acceptance.
Tome of Madness
Tome of Madness is a grid slot from Play'n GO, released on 27 June 2019. The studio game page describes a 5×5 cascading cluster grid, Portal charge thresholds, Special Wilds, Multiplier Wild, Abyss, Void, Other World Free Round and Mega Wild Cthulhu. Play'n GO rules list RTP builds 84.50%–96.59%, volatility 10 – VERY HIGH and maximum exposure 2,000× total bet.
This card follows that Play'n GO page, the game rules sheet and the attached desktop frames. It is not a report of played cash sessions.
For adults of legal gambling age in their location. Set a budget you can afford to lose.
Read full reviewTome of Madness Return:
Tome of Madness review overview
5×5 cascading clusters
Wins need at least four matching symbols touching horizontally or vertically. Winning symbols disappear, new symbols fall in, and the round continues until no further cluster appears. Diagonal contact alone does not connect a cluster.
Portal, Abyss, Void and Other World
Winning symbols charge the Portal. Thresholds at 7, 14 and 27 add Special Wilds and can open Abyss or Void; 42 opens the Other World Free Round with three to seven Portal Effects rather than a fixed free-spin counter.
Who Tome of Madness suits
Tome of Madness suits readers who want a state-driven grid ladder with clear Portal steps. It is less suited to anyone seeking low-complexity line slots or frequent, predictable bonus pacing.
Best for
- Players comparing Portal thresholds with Abyss and Void clears
- Readers checking how Other World uses stored Portal Effects
- Anyone verifying the listed RTP span from 84.50% to 96.59%
Not ideal for
- Players seeking fixed paylines or low-volatility pacing
- Anyone reading 2,000× as a typical short-session result
- Readers who want a conventional free-spin counter without grid modifiers
Tome of Madness game information
Provider:
Play’n GO
Release Date:
June 2019
Game Type:
Grid Slot
Grid:
5×5
Win system:
Cluster pays (4+)
RTP:
84.50%, 87.52%, 91.59%, 94.52%, 96.59%
Max Win:
2,000×
Volatility:
Very High
Features:
Portal charge at 7/14/27/42, Special Wilds, Multiplier Wild x2, Abyss, Void, Other World Free Round, Mega Wild Cthulhu, Eye Marks
Theme:
Rich Wilde, Cthulhu mythos, horror adventure, Tome of Madness
Wild Symbol:
Yes
Free Spins:
Yes
Progressive:
No
Bonus Buy:
No
Tumbling Wins:
Yes
Gamble feature:
No
Scatter Symbol:
No
How Tome of Madness rules and features work
Portal thresholds
At 7 winning symbols, two Special Wilds are added. At 14, two Special Wilds are added and a win with one can trigger Abyss. At 27, two Special Wilds are added and a win with one can trigger Void. If a later charge effect is earned before an earlier one plays, only the later effect is awarded.
Other World Free Round
Collecting 42 winning symbols opens one free round with three random Portal Effects. Every three symbols beyond 42 adds another effect, up to seven. Effects resolve after cascades run out. Opening every Eye Mark releases Mega Wild Cthulhu.
How to play Tome of Madness responsibly
Visible Portal progress can make a cascade feel close to the 42-symbol feature. Set a money limit and a time limit before play, treat each paid round as independent from the next stake, and stop when either limit is reached.
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Separate Portal charge from the next stake
A rising Portal meter is unpaid game state inside the current round. It does not make the next paid spin due.
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Budget cascade time
One paid round can branch into several cascades and Portal Effects. Use a clock or round budget rather than assuming every spin lasts the same length.
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Read 2,000× as a ceiling
Play'n GO rules define maximum exposure as 2,000× total bet. That figure is a published limit, not a short-session target.
Symbols and Paytable
Special Wild (Tome), Multiplier Wild (Rich Wilde) and Mega Wild Cthulhu sit beside four high-pay relics and four low-pay stones. This card stores symbol text without separate art files.
Special Wild (Tome)
The Tome substitutes for regular high-pay and low-pay symbols. Portal thresholds can place Special Wilds on the grid; Abyss and Void check whether a win uses one.
Multiplier Wild (Rich Wilde)
Rich Wilde substitutes for high-pay symbols and applies a x2 multiplier to that win within the same anywhere-on-grid cluster logic.
Mega Wild Cthulhu
Released only in the Other World Free Round after every visible Eye Mark is opened. It moves downward with each cascade before disappearing.
High-pay relics and low-pay stones
Four high-pay relics (pendant, dagger, ring, Cthulhu skull) and four coloured low-pay stones form clusters of four or more touching horizontally or vertically. Awards follow the in-game total-bet multiplier table.
Tome of Madness RTP, volatility and maximum win
Play'n GO's Tome of Madness rules list discrete RTP configurations of 84.50%, 87.52%, 91.59%, 94.52% and 96.59%. This card stores 84.50% as the low end, 96.59% as the displayed RTP and the top of that published span, and rtp_text lists every setting from low to high. The same rules sheet rates volatility 10 – VERY HIGH and defines maximum exposure as 2,000× total bet. The current marketing page describes the 5×5 cluster Portal ladder without reprinting those percentages. RTP remains a long-run configuration figure, not a short-session return.
Provider
Play’n GO
RTP range
84.50%
96.59%
Volatility
Very High
max win
2,000×
How to interpret the numbers
Key point 1
Waiting for higher Portal thresholds is part of very high volatility. A quiet stretch does not make the next Other World round due.
Key point 2
Confirm the active stake and whether you are still in a cascade or Other World sequence before the next paid spin.
Key point 3
Rules list 84.50%, 87.52%, 91.59%, 94.52% and 96.59%. Confirm the active build on the operator information panel.
Tome of Madness Screenshots
Desktop frames show the Other World splash, 5×5 base with Portal, Eye Marks help, Portal/Abyss/Void help and a cascade on the attached set.
Tome of Madness compared with other games
Other Play'n GO grid cards also cascade after clusters and build toward a named bonus, but shared studio art does not copy this Portal ladder. Tome of Madness is closer to threshold-driven grid titles than to Book of Dead expanding Free Spins. Compare how each page defines charge steps, Abyss or Void clears and the loaded RTP before treating another Rich Wilde theme as the same game.
| Game | Return / max win | Volatility | Bonus fit | Watch out for |
|---|---|---|---|---|
| Tome of Madness | 84.50%–96.59% / 2,000× | Very High | Other World is a one-round Portal-effect sequence, not a conventional multi-spin Free Spins bank. | Shared Rich Wilde or Cthulhu art does not transfer another title’s expanding-symbol Free Spins or RTP list onto this card. |
| Rise of Olympus 100 | 84.20%–96.20% / 15,000× | High | Wrath of Olympus opens Free Spins after a full-grid clear; Hades, Poseidon and Zeus set starting spins and retrigger size. | Shared Olympus art does not transfer another title’s scatter rule or a single RTP figure here. |
| Rise of Olympus | 84.50%–96.50% / 5,000× | Very High | Free Spins need a full-grid clear, then a Hades, Poseidon or Zeus package with that god’s Hand of God on non-winning spins. | Shared Olympus art does not transfer another title’s Free Spins count, meter rules or RTP build onto this card. |
Explore Play’n GO games
When comparing, ask which Portal thresholds open Abyss or Void and which RTP the lobby loads.
Play’n GO Reportedly Explores Potential Sale
November 6, 2026
Other Play’n GO games to compare with Tome of Madness
Treat the automatic Play'n GO carousel as a shortlist, not as proof. Newer Rich Wilde cards can share characters while Portal rules and RTP builds differ. Open each live panel before treating another game as interchangeable.
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How this Tome of Madness review was checked
Publication status: Document-based review against Play'n GO’s Tome of Madness page, the game rules sheet and the attached desktop frames; no cash session is represented.
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Studio page. Matched 5×5 cascading cluster wording, Portal thresholds at 7/14/27/42, Special Wilds, Multiplier Wild, Abyss, Void, Other World Free Round, Mega Wild Cthulhu, Eye Marks and 27 June 2019 release to https://www.playngo.com/games/tome-of-madness.
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Game rules sheet. Matched RTP configurations 96.59%, 94.52%, 91.59%, 87.52%, 84.50%, volatility 10 – VERY HIGH and maximum exposure 2,000× total bet from Play'n GO’s Game Rules and Settings for Tome of Madness.
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Desktop frames. Attached screens show Other World splash, base 5×5 with Portal meter, Eye Marks help, Portal/Abyss/Void help and a cascade used for captions. No separate mobile set was attached.
Player reviews
Player reviews for Tome of Madness
Player opinions about gameplay, pacing and usability. Ratings are unweighted and moderated separately from session data.
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Based on 0 player reviews
Rating breakdown
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Reviewed by
Matěj Vlk
Last reviewed
Last Updated
Review focus
Rules, RTP, volatility and bonus features
FAQs
How does Tome of Madness pay?
Clusters of four or more matching symbols touching horizontally or vertically pay. Winning symbols disappear and the grid cascades until no further cluster appears.
What does the Portal do?
Winning symbols charge the Portal. Thresholds at 7, 14 and 27 add Special Wilds and can open Abyss or Void; 42 opens the Other World Free Round.
What is the Other World Free Round?
It is one free round with three to seven Portal Effects resolved after cascades, not a fixed package of free spins.
What RTP does Play'n GO list?
The rules sheet lists 84.50%, 87.52%, 91.59%, 94.52% and 96.59%. Confirm the active build on the operator panel.
What maximum does the rules sheet define?
Maximum exposure is defined as 2,000× total bet. That is a published ceiling, not a typical session outcome.
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