Tome of Madness

Tome of Madness slot — key mechanics

The core objective in the slot is to charge a special progress tracker known as the Portal Meter, which appears as a glowing medallion. Every winning combination adds points to this meter. If there are no more wins in a row, the points are reset.

Throughout the game, you’ll notice a unique cell on the grid called the Eye Mark. When a winning symbol lands on this marked spot, two Wild symbols are added to the grid.

As you fill the Portal Meter, various bonus features are unlocked, boosting your chances of landing bigger wins.

Tome of madness — bonus mechanics

When the portal is activated, several additional mechanics can be triggered. Let’s take a look at what they actually do.
Abyss Portal Effect — 2 Wild symbols appear on the grid. If a winning combination includes one of these symbols, the entire row or column containing it is removed from the grid. All removed symbols are added to the Portal Meter.
Void Portal Effect — 2 Wild symbols appear. Then, the game selects one random symbol and removes all of its copies from the grid.
Other World Free — a bonus game with its own set of mechanics, which we’ll cover in the next section.
Also, it’s worth noting that the game uses the Cascading Reels mechanic. This means that when symbols disappear from the grid, new ones fall into place, potentially creating new winning combinations.

Free rounds gameplay

When the player fully fills the medallion, the “Other World Free” feature is activated. The player receives a free round with one of the following additional effects:

• The appearance of 4 Wild symbols

• The appearance of 4 Wild symbols and activation of the Abyss Portal Effect, if a Wild is part of a winning combination

• Same as the previous, but instead the Void Portal Effect is triggered

Each winning combination can trigger additional effects, and these effects will accumulate, but the total number of effects cannot exceed 7.

Mega wild symbol

You can also trigger the Mega Wild symbol. During the bonus game in the Tome of Madness, 11 to 12 Eye Mark cells appear on the grid. If the player manages to land a winning combination on each of these Eye Marks, a Mega Wild symbol in the form of Cthulhu will appear on the grid.

Conclusion

The recognizable character Rich Wilde, the carefully crafted visuals inspired by Lovecraftian horror, and the intricate bonus game mechanics — these are the signature traits of Play’n GO’s approach that make us love their games.

According to the platform Stake, the game consistently has 50–70 active players, even outside of peak hours (on Stake, you can actually see the current number of people playing), despite the fact that the slot is already 6 years old at the time of writing this review!

Tome of Madness remains a fan favorite in many English-speaking regions, including the United States, Canada, Australia, and New Zealand, where it is available through reputable and fully licensed online casinos.

Rich Wilde and the Tome of Madness is a perfect fit for fans of high-volatility slots. If the player is willing to endure long stretches without major wins, they will be rewarded with a bonus round and the Mega Wild mechanic.