Rich Wilde and the Tome of Madness is a high volatility and cascading 5x5 cluster wins slot game. Here are some of its features and mechanics:

Symbols:
- Low-end symbols: green, blue, red and purple crystals
- High-end symbols: Cthulhu Skull, Ring, Dagger, and Octopus Pendant icons
- 3 different types of Wild Symbols: Special Wilds (Book), Cthulhu Mega Wilds, Rich Wilde (Multiplier Wild Symbol)

Bonus Features:
- Eye Marks: a pink Eye Mark will appear in a random location on the grid. If a winning cluster lands on top of one of these locations, two Special Wilds will be added to the grid once the win sequence is complete.
- Portal and Special Wilds: the circular Portal on the left of the grid (or underneath the grid if you are playing on mobile) lies at the heart of the bonus features in this slot. Consecutive wins will keep charging the portal and the total number of winning symbols will be calculated and displayed in the center of the Portal graphic. Collecting 7, 14, or 27 winning symbols will randomly add two Special Wilds to the grid, and if they are part of a winning cluster, the Abyss or Void Portal effect will be activated.
- Other World Free Round Feature: collecting 42 winning symbols will trigger this feature which contains three random Portal effects. For every 3 symbols collected over and above the 42 that triggered the feature, the player will get an extra Portal effect (up to a maximum of 7). During this feature, a Portal effect is activated until no more wins are possible after a cascade.
- Mega Wild Symbol: opening all the Eye Markers will unleash the Mega Wild Cthulhu Symbol. This is a giant Wild symbol that is added to the reels and continues to move down a step with each cascade, increasing the player's chances of winning on every spin.

Maximum Payouts:
- Octopus Pendant: 100x total bet
- Dagger: 60x total bet
- Ring: 40x total bet
- Cthulhu Skull: 30x total bet
- Purple Crystal: 6x total bet
- Red Crystal: 5x total bet
- Blue Crystal: 4x total bet
- Green Crystal: 2x total bet

RTP:
- Rich Wilde and the Tome of Madness has an RTP of 96.59%

Jackpot:
- The game offers a fixed maximum jackpot of 200,000 coins (2000x the maximum bet of 100 coins)

Other Information:
- Rich Wilde and the Tome of Madness is available on all devices including smartphones, tablets, laptops, and PCs.
- The game boasts stunning graphics and animations.