Quick verdict: Rich Wilde and the Tome of Madness is a Play’n GO cluster slot from June 2019, with a 5×5 grid, a 96.59% RTP, high volatility and a 2,000x max win. Winning symbols charge a Portal that adds wilds and clears symbols, and a full Portal opens the Other World bonus round.
It is a grid slot in Play’n GO’s Rich Wilde series, which also includes Book of Dead, and the 2024 sequel is Rich Wilde and the Tome of Insanity.
Where we play Tome of Madness
1win is our top-rated casino (9.9/10), with thousands of slots and a crypto withdrawal that took 15 minutes in our test.
Play at 1win18+. T&Cs apply. Not available in every country. Game libraries vary, so search the lobby for Tome of Madness.
Tome of Madness at a glance
| Provider | Play’n GO |
|---|---|
| Released | June 2019 |
| Layout | 5×5 grid, Cluster Pays (4 or more touching symbols) |
| RTP | 96.59% (lower versions exist) |
| Volatility | High |
| Bet per spin | 0.10 to 100 |
| Max win | 2,000x your stake |
| Wilds | Special Wilds and Rich Wilde wilds that double wins |
| Bonus | Fill the Portal to start the Other World round |
| Bonus buy | None found |
| Mobile | Yes |
How do the wins and cascades work?
Four or more matching symbols touching up, down or sideways make a win. The winning symbols disappear and new ones fall in, so one spin can pay several times. The Rich Wilde wild stands in for the high symbols and doubles the win, and a winning cluster over an Eye Mark opens it and adds 2 Special Wilds.
How does the Portal work?
Every winning symbol adds a charge to the Portal beside the grid. Each level adds 2 Special Wilds, and the higher levels add an extra effect.
| Charges | Effect |
|---|---|
| 7 | 2 Special Wilds |
| 14 | 2 Special Wilds; if they win, the Abyss removes their row or column |
| 27 | 2 Special Wilds; if they win, the Void removes every symbol of one type |
| 42 | The Other World bonus round |
How does the Other World round work?
There are no ordinary free spins. Other World is a single free round that starts with 3 Portal effects, plus one more for every 3 symbols over 42, up to 7. The effects fire after each cascade. During the round, opening all the Eyes on the map releases Cthulhu, a mega wild that moves down one step with each cascade.
Tome of Madness vs Tome of Insanity
| Feature | Tome of Madness | Tome of Insanity |
|---|---|---|
| Released | June 2019 | May 2024 |
| RTP | 96.59% | 96.20% |
| Volatility | High | Medium |
| Max win | 2,000x | 5,000x |
| Portal levels | 7, 14, 27, 42 | 8, 16, 30, 48 |
| Big wild | Cthulhu | Yog-Sothoth |
The original has the higher RTP, while the sequel is calmer and has a cap two and a half times higher.
Tips for playing Tome of Madness
- Long cascades charge the Portal fastest, because each winning symbol adds a charge.
- Overcharging the Portal past 42 adds extra effects to the bonus, up to 7.
- We found no bonus buy listed for this game.
- Check the RTP in the game rules: 96.59% is the top version, and some casinos use much lower ones.
Slots like Tome of Madness
- Rich Wilde and the Tome of Insanity: the 2024 sequel with a 5,000x cap.
- Reactoonz: another Play’n GO grid slot with a charge meter.
- Reactoonz 2: the 2020 Reactoonz sequel.
- Book of Dead: the Rich Wilde classic.
Where to play Tome of Madness
Casinos with Play’n GO slots list several Rich Wilde games, so check you have opened Tome of Madness. 1win is our top-rated casino at 9.9/10 and paid our crypto withdrawal in 15 minutes in June 2026. New players can use promo code Ultragambler (see our 1win promo code page).
Rich Wilde and the Tome of Madness FAQs
What is the RTP of Tome of Madness?
96.59% in the top version, according to SlotCatalog, Casinos.com and GamesHub. Some casinos use lower versions.
What is the max win in Tome of Madness?
2,000x your stake, according to SlotCatalog, Casinos.com and GamesHub.
Does Tome of Madness have free spins?
Not ordinary ones. Filling the Portal with 42 charges starts the Other World bonus round instead.
Is Tome of Madness part of the Rich Wilde series?
Yes. It is a Rich Wilde grid slot, and Rich Wilde and the Tome of Insanity is its sequel.
Can I play Tome of Madness for free?
Yes. The demo at the top of this page plays with free credits; it loaded when we tested it on 8 October 2026.
How we checked this
- June 2019 release, the 5×5 cluster grid, 96.59% RTP, high volatility, 0.10 to 100 bets and the 2,000x cap: Play’n GO, SlotCatalog, Casinos.com and GamesHub.
- The Portal levels, Abyss and Void, Eye Marks, the Other World round and Cthulhu: Play’n GO, SlotCatalog and GamesHub.
- Tome of Insanity figures: Play’n GO, SlotCatalog and World Casino Directory.
- Sources disagree on the top symbol’s payout and the max-win odds, so we leave them out. Only Casinos.com mentions the bonus buy (it says there is none).
- Figures last checked: 8 October 2026.
Important: check your local laws before you play
Online gambling laws differ from country to country, and in some places it is restricted or not permitted at all. Check that online gambling is legal where you live and that the casino accepts players from your country. You must be 18 or older (or the legal gambling age in your country, if higher). Only gamble with money you can afford to lose.
