Tome of Madness

Tome of Madness

Tome of Madness is a slot game inspired by the stories of H.P. Lovecraft, featuring cascading reels and a unique portal mechanic. Players explore mysterious symbols and unlock special features as they progress through a world of eldritch intrigue and eerie visuals.

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Game Overview

Tome of Madness is a 5-reel online slot from Play'n GO, played on a 5x5 grid. Symbols cascade down the grid, with wins achieved by forming clusters of 4 or more matching symbols that are touching either horizontally or vertically. When a winning cluster is formed, the symbols are removed from the grid, and new symbols drop in to fill the empty spaces. The cascading process continues until no further clusters are formed.

Betting Options

  • Minimum bet: £0.10
  • Maximum bet: £5.00

To change the bet amount, use the plus and minus buttons or choose a value from the available bet buttons at the bottom of the game interface. The bet can only be adjusted between game rounds and cannot be changed during an ongoing round. The RTP is displayed within the game.

Cluster Pays and Win Formation

Wins are awarded for clusters of 4 or more identical symbols that touch horizontally or vertically, with no gaps. A cluster can start at any position on the grid. Multiple separately connected clusters can create multiple wins in the same round, with all winnings combined. Only the highest win per cluster is paid. The outcome is determined by the symbols displayed when the grid settles, subject to the paytable.

Cascade Mechanic

After each win, the winning symbols are removed, and new symbols drop from above into the empty positions. Cascades continue automatically until no additional winning clusters are created.

Eye Marks Feature

Eye Marks may appear on random grid positions. If a winning cluster includes a symbol in an Eye Mark location, the Eye is opened. When no further wins occur, 2 SPECIAL WILDS are added to the grid.

Portal Charge and Effects

Each win charges the Portal:

  • After wins on 7 symbols: 2 SPECIAL WILDS are added to the grid.
  • After wins on 14 symbols: 2 SPECIAL WILDS are added. If a win involves a SPECIAL WILD, the ABYSS Portal Effect triggers.
  • After wins on 27 symbols: 2 SPECIAL WILDS are added. If a win involves a SPECIAL WILD, the VOID Portal Effect triggers.

If a new Portal charge level is achieved before the previous effect is activated, only the most recent effect occurs.

ABYSS Portal Effect

This effect removes an entire row or column starting from the position of the winning SPECIAL WILD. Symbols removed contribute to further charging the Portal. If another SPECIAL WILD is also removed in this process, the removal extends from that symbol as well.

VOID Portal Effect

With this effect, one regular symbol is selected at random, and all instances of it are removed from the grid.

Other World Free Round

The Other World Free Round triggers after wins on 42 symbols in a single base game round. This awards 1 free round with 3 random Portal Effects. Each additional 3 winning symbols over the initial 42 add another Portal Effect, up to 7 effects.

During the Other World Free Round, a Portal Effect activates when no more wins occur in a cascade.

Portal Effects in the Other World Free Round

  • 4 SPECIAL WILDS are added to the grid.
  • 4 SPECIAL WILDS are added; if wins involve any SPECIAL WILD, the ABYSS Portal Effect is triggered.
  • 4 SPECIAL WILDS are added; if wins involve any SPECIAL WILD, the VOID Portal Effect is triggered.

Eye Marks in Free Round

During the free round, 11 or 12 Eye Marks appear. Each is opened by forming a win at its position. If all Eyes are opened, a MEGA WILD Cthulhu symbol is added to the grid and descends with each cascade until it exits the grid. Cascading continues until no further wins occur.

Game Information and Payouts

Cluster wins are added together for each round. Winnings from features such as free rounds and bonus effects are included in the total payout for the round. All payouts for a round are made at its conclusion, based on the paytable.

Free rounds are played at the same bet amount as the round that triggered them.

Game Controls and Actions

  • Change Bet: Adjust the bet size using plus/minus buttons or select from the bet buttons.
  • Paytable: View detailed payout information by toggling the paytable display.
  • Start / Spacebar: Begin a new game round with the chosen bet by clicking Start or pressing the Spacebar.
  • Auto Adjust Bet: If the current balance is insufficient for the selected bet, the total bet will be reduced automatically to the highest possible level. The bet will not revert to the original amount after a win unless changed manually.

Unfinished Games

If a game round is interrupted, all progress and bets are stored. Players can resume from where play was halted upon returning to the game. Bets unresolved in unfinished games become void after 90 days. Malfunctions invalidate all plays and payouts.

Tome of Madness Free Play & Demo Information

Searching for a Tome of Madness free play or Tome of Madness demo mode is a popular way to explore a slot. As no free version is offered on this site, this page shares the main information about the game.

Based on the slot itself, the details highlight its defining characteristics.

This can make it a useful alternative to demo play, helping you understand Tome of Madness quickly and clearly.


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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.