Tome of Madness Bingo

Tome of Madness Bingo is a Play’n GO release from December 18, 2025, taking the Cthulhu Mythos setting of Tome of Madness out of the slot reels entirely and into a video bingo format. Up to 4 cards can run at once, each marking off numbers as balls are drawn toward Rails, Perimeter, and Full House patterns, with a stated theoretical RTP of 97.38%, medium volatility, and a hit frequency of roughly 1 in every 2.36 draws. The win cap is 4,250x the bet per card.

Because the game has no reels, paylines, or clusters, its variance comes entirely from how the balls interact with the layered bonus systems bolted onto the draw. Extra Balls can appear when a card is close to completing a pattern, effectively extending the round’s chance to hit before it ends, a design borrowed from the studio’s other bingo hybrids rather than anything in the mainline Rich Wilde series.

Secrets of the Tome and Mystery Tome Bonuses

Two named features sit on top of the base draw. The Secrets of the Tome Bonus is a pattern-based pick feature that builds toward its own tally as cards fill in, while the Mystery Tome Bonus offers an alternate path to an instant payout independent of completing a bingo pattern. Mystery symbols can also reveal hidden outcomes mid-draw, and random multipliers occasionally apply to a card’s result.

Treasure of Cthulhu

The headline feature is the Treasure of Cthulhu: completing a full Bingo, a Full House, on all 4 active cards within the first 30 balls drawn triggers it and pays up to 4,250x the bet per qualifying card, the single largest payout the game offers and the direct source of its win cap. Running fewer than 4 cards lowers the cost per round but also removes the chance of qualifying for this feature entirely, since all active cards must complete together within the ball limit.

The pacing this creates is unlike anything else in the franchise: instead of watching reels settle in under two seconds, a bingo round can take a genuine stretch of time to resolve as balls draw out one by one, and the tension comes from watching which numbers are still needed across multiple cards rather than from a single spin’s outcome.

Tome of Madness Bingo Review

Tome of Madness Bingo is the furthest the Rich Wilde franchise has strayed from its own core format, trading cluster grids and Portal Meters for a numbers-draw structure most slot players will not have direct experience reading. The 97.38% RTP is unusually generous for a Play’n GO release, and the layered Extra Balls, Secrets of the Tome, and Mystery Tome systems give a game with no reels a surprising amount of moving parts to track.

Whether it belongs alongside the mainline Tome titles is a matter of taste: mechanically it shares nothing with them beyond the Cthulhu theming, but as a change of pace inside the same fictional world, it succeeds at being genuinely different rather than another meter-and-release variant. For players who already enjoy video bingo elsewhere in Play’n GO’s catalog, the horror dressing and the Treasure of Cthulhu ceiling make this one of the more distinctive entries in that format, even if it has little to say to players who came to the franchise for its reels.