| RTP | 96.00% - Compare RTPs |
|---|---|
| Volatility | High |
| Reels | 5 |
| Paylines | 1 |
| Bet Range | £0.10 - £100.00 |
| Max Win | 2,000x |
| Features | Wilds, Scatters, Bonus Rounds |
Rich Wilde and the Tome of Madness is a 5x5 cluster pays slot from Play'n GO released on 27 June 2019. It draws its atmosphere directly from H.P. Lovecraft's Cthulhu mythos and pairs that theme with a layered mechanical system built around a charging portal meter. The result is one of Play'n GO's more technically ambitious releases - a slot that rewards patience and understanding of how the progression system builds toward its bonus round.
How the Game Works
The 5x5 grid uses cluster pays rather than traditional paylines. Wins form when four or more matching symbols connect horizontally or vertically anywhere on the grid. After each winning cluster, those symbols disappear and new ones drop from above - a cascade mechanic that can chain wins together in a single spin.
Volatility is very high. The base game can go long stretches without notable wins, and the bonus triggers roughly once every 301 spins on average. The RTP sits at 96.59%, though operators can configure reduced variants (down to 84.50%), so check the help screen on whatever site you're playing at.
Low-paying symbols return 2x to 6x for clusters of 10 or more. High-paying symbols return 30x to 100x for the same cluster size. Betting runs from 0.10 to 100.00 per spin.
The Portal Meter
The core progression mechanic is the Portal Meter, which sits at the side of the grid and charges with every symbol that contributes to a winning cluster within a single spin sequence. Consecutive cascades keep building the meter. Four thresholds unlock increasingly powerful effects:
- 7 symbols - Special Wild: A Necronomicon wild is placed on the grid, substituting for all regular symbols and potentially extending the cascade sequence.
- 14 symbols - Abyss Effect: An entire row or column of symbols is removed from the grid, clearing space and triggering a refill that can generate new clusters.
- 27 symbols - Void Effect: One symbol type is wiped from the grid entirely. If the lowest-value symbols get removed, remaining clusters pay better.
- 42 symbols - Other World Free Round: The bonus round triggers. This is the main event.
Reaching 42 symbols in a single spin sequence is the target. Each subsequent group of three symbols beyond 42 adds an extra Portal Effect to the free round, so the larger the triggering sequence, the more powerful the bonus starts out.
Special Symbols
Rich Wilde himself appears as a Multiplier Wild. When he joins a winning cluster, the win gets doubled. He does not substitute for the Necronomicon symbol.
The Necronomicon (the book) acts as a standard wild that substitutes for all regular paying symbols. It can appear during base game play and also turns up during Portal Effect activations.
Eye Mark symbols land on the grid during Portal Effects and grant additional wilds when they land on winning positions, helping extend cascade sequences. Unlocking 11-12 Eye Marks triggers the Cthulhu Mega Wild during the bonus round.
Other World Free Round
The bonus round begins with one free spin and three Portal Effects already loaded. The Cthulhu Mega Wild enters the grid here - a 2x2 block (or larger, up to 4x4) that acts as a giant wild covering multiple grid positions simultaneously. It starts at the top of the grid and moves down with each cascade, leaving a trail of wilds as it descends.
The combination of the Mega Wild moving down, cascades triggering from clusters it helps form, and the carried-over Portal Effects creates the win potential the game is built around. Additional Portal Effects during the free round keep the meter active and can chain Abyss and Void Effects alongside the descending Mega Wild. Up to seven additional Portal Effects can activate during the free round.
Extra free spins can be added if the meter charges again during the bonus round. Maximum win is 2,000x stake.
Mega Symbols
During both base game and bonus, Mega Symbols can appear - oversized 2x2 or 3x3 symbol blocks that count as multiple instances of a symbol simultaneously. When a Mega Symbol lands adjacent to matching regular symbols, it can instantly form or extend a cluster well above the minimum four needed for a win. These amplify the cascade potential significantly when they appear in the right position.
Theme and Presentation
Play'n GO built the visual design around Lovecraftian cosmic horror rather than just borrowing the aesthetic. The grid sits within a dark ritual setting, with tentacles, arcane tomes, and eldritch imagery throughout the symbol set. The portal itself visually reacts as the meter builds. Rich Wilde appears as an explorer out of his depth rather than the confident archaeologist he is in other series entries - which fits the source material.
The soundtrack builds tension without becoming repetitive, which matters for a high-volatility game where you may be spinning through dry stretches for extended sessions.
Where Tome of Madness Fits in the Rich Wilde Series
The Rich Wilde series spans several Play'n GO releases. Book of Dead is the most widely played entry - a simpler game built around an expanding wild and eight free spins. Tome of Madness replaces that format entirely with a cluster pays grid and a multi-stage progression system, making it the most mechanically complex entry in the series.
Players who find Book of Dead's simplicity appealing may find Tome of Madness overwhelming at first. Players who want more from their slot mechanics will find the portal system adds depth that most slots lack. Play'n GO later released Rich Wilde and the Tome of Insanity as a follow-up, which builds on the same cluster pays framework.
For a different kind of high-volatility cluster pays experience, Reactoonz by Play'n GO uses a similar 7x7 grid format with its own charge meter mechanic - a useful comparison point if the Tome of Madness format appeals.
Summary
Rich Wilde and the Tome of Madness is a high-volatility cluster pays slot with a well-built progression mechanic. The portal meter system means almost every spin contributes to something - even a small cluster of seven symbols delivers a tangible effect. The Other World bonus with the descending Cthulhu Mega Wild is where the large wins come from, and the route to get there is more engaging than a simple scatter count. The 1-in-301 bonus frequency and very high volatility make it a game for patient players. For casinos offering Play'n GO, check our full listings to find sites running the full 96.59% RTP configuration.
What is the RTP of Rich Wilde and the Tome of Madness?
The default RTP is 96.59%. Some casinos may offer the game at lower RTP configurations (94.52%, 91.59%, 87.52%, or 84.50%), so check the help screen on the site you are playing at.
How do cluster pays work in Tome of Madness?
Instead of fixed paylines, wins form when four or more matching symbols connect horizontally or vertically anywhere on the 5x5 grid. Winning symbols disappear and new ones drop in, which can trigger chain reactions called cascades.
What is the Portal Meter and how does it charge?
The Portal Meter charges with every symbol that contributes to a winning cluster during a single spin sequence. At 7 symbols a Special Wild appears, at 14 the Abyss Effect removes a row or column, at 27 the Void Effect eliminates one symbol type, and at 42 symbols the Other World bonus round triggers.
What is the Cthulhu Mega Wild in the free round?
During the Other World free round, the Cthulhu Mega Wild enters the grid as a large 2x2 or 4x4 wild block. It starts at the top of the grid and moves down with each cascade, covering multiple positions simultaneously and boosting win potential considerably.
What is the maximum win in Tome of Madness?
The maximum win is 2,000x your stake per spin.
Is Tome of Madness suitable for low-stakes players?
The minimum bet is 0.10, so it is accessible at low stakes. However, the very high volatility means wins can be infrequent during the base game. Players with smaller bankrolls may find the variance challenging over extended sessions.
Where to Play Rich Wilde And The Tome Of Madness
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Rich Wilde And The Tome Of Madness RTP and Variance
Rich Wilde And The Tome Of Madness has an RTP of 96.00%, which is above average. See our highest RTP slots for the best returning games. High volatility means wins come less often but tend to be significantly larger. Explore our high volatility slots guide.
At the minimum bet of £0.10 per spin, a £10 deposit gives you 100 spins with a statistical expected return of £9.60. Read our slot betting strategy guide for tips on managing your bankroll.