Tome of Madness
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Overview of Tome of Madness
Tome of Madness is a cascading slot game developed by Play'n GO. Set on a 5x5 grid, this online slot features cluster pays, where wins occur through connected clusters of four or more identical symbols touching horizontally or vertically. Rich Wilde leads the adventure, with numerous dynamic features waiting to be unlocked through gameplay.
Game Structure and Betting
- Provider: Play'n GO
- Reels: 5
- Minimum bet: £0.10
- Maximum bet: £5.00
You can select your preferred bet using the plus or minus buttons to adjust the amount one step at a time, or by choosing from the available bet buttons. Each game round is initiated by pressing the START button, setting the reels in motion. The symbols that land will determine your result according to the paytable. Bets cannot be changed during an active game round. The RTP is displayed within the game.
How to Win
Wins are awarded when four or more matching symbols land in a connected group, either horizontally or vertically, with no gaps between them. Winning combinations can begin from any position on the grid. If there are multiple clusters in a single round, all winnings are combined. Only the highest winning amount is paid per symbol combination. At the end of the round, all winnings from Feature rounds and Bonus Game are added to your total.
Cascading and Special Symbols
Whenever a winning cluster is formed, those symbols are removed from the grid, allowing new symbols to drop down from above and potentially form additional clusters. Cascades continue until no further cluster wins can be made. Eye Marks can appear randomly on the grid—opening them requires forming a win in the Eye Mark’s position. When there are no further wins, two SPECIAL WILDS are added to the grid.
The Portal Charge and Effects
Each win charges the Portal:
- After wins totalling 7 symbols, 2 SPECIAL WILDS are added.
- After 14 symbols, another 2 SPECIAL WILDS appear. A win with one of these triggers the ABYSS effect.
- After 27 symbols, 2 more SPECIAL WILDS are placed. A win with these triggers the VOID effect.
If another charge effect is earned before the previous has been played, only the most recent effect takes place. The ABYSS removes an entire row or column from the position of the SPECIAL WILD, with any symbols removed counting toward further charging the Portal. If another SPECIAL WILD is removed by ABYSS, its effect will activate from that position. The VOID randomly selects one regular symbol and removes all of its occurrences from the grid.
Other World Free Round Feature
Achieving wins on 42 symbols during a single game round activates the OTHER WORLD FREE ROUND, awarding one free round with three random Portal Effects. For every three additional winning symbols collected during the charge, one extra Portal Effect is granted, up to a maximum of seven. During this bonus, a Portal Effect is activated only when no further wins occur in cascade.
The possible Portal Effects are:
- SPECIAL WILDS: Four SPECIAL WILDS are added to the grid.
- ABYSS: Four SPECIAL WILDS are placed. If a win happens with any of these, the ABYSS effect is triggered.
- VOID: Four SPECIAL WILDS are placed. A win with any triggers the VOID effect.
During the OTHER WORLD FREE ROUND, 11 or 12 Eye Marks are visible. Each can be opened by landing a winning combination in its position. If all Eye Marks are opened, the MEGA WILD Cthulhu symbol appears and moves downward with each cascade until it disappears. Cascades persist until no new wins are available.
Unfinished Games and Malfunctions
If your game is interrupted, all progress and bets are stored, allowing you to resume exactly where you left off when you re-open the game. Any undecided bets remaining from incomplete games will be void after 90 days. In the event of a malfunction, all pays and plays become void.
Gameplay Actions
- Changing Your Bet: Click one of the five bet buttons or use the plus and minus buttons to adjust the bet step by step.
- Paytable: Toggle the paytable to view symbol values and feature rules.
- Start/Spacebar: Begin a game round with your selected bet by clicking START or pressing the spacebar.
- Auto Adjust Bet: If your balance is too low to continue at your current bet, the game will reduce your total bet to the highest possible amount automatically. The bet will remain at the new amount even after future wins, unless changed by the player.
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*All values (Bet Levels, Maximum Wins etc.) mentioned in relation to this slot game are subject to change at any time. Game features mentioned may not be available in some jurisdictions.

