Book of Hidden Tombs Brings 512x Multipliers to Classic Book Slots

The well-known slot book series from BGaming returns to Ancient Egypt with Book of Hidden Tombs, a new slot combining the long-time-tested book of format with expanding symbols and a novel multiplier that grows after each losing spin. The slot was released on August 20th, 2026. The slot features a 5 x 3 Reel matrix with 10 fixed lines and the highest possible win is 10,000 times the bet.

A new spin on a proven formula

The use of the book style and ancient Egyptian theme are probably the two most popular elements of online slot games. As such, BGaming is in no way trying to disguise these similarities. Characters like Ra, Anubis, Bastet and an adventurer can be seen alongside the "book" symbol which serves as both wild and scatter. What really matters here is how the provider has adapted the base formula. The free spins bonus is activated when at least three books are landed anywhere in view.

Before starting the round, a random symbol is designated as the golden expanding symbol. If the player gets enough of those in view, they will stretch out vertically down the reels and create payouts across all ten paylines (even if originally placed out of order). An additional 10 free spins are awarded if three or more books land during the feature. Although it is based on very similar elements, the Super Free Spins offer BGaming a much different mathematical flow than other slots using this same base formula.

Each losing spin will increase the next multiplier

The most unique element of Book of Hidden Tombs is its progressive multiplier. Super free spins begin at a 1x multiplier. Each losing spin increases the next multiplier to a factor of two. Thus, every losing spin moves closer to a larger multiplier until it reaches a max of 512x. Once a winning combination is created the accumulated multiplier is applied to that win and then reset back to 1x.

Therefore, what would otherwise be considered purely negative (a losing spin) now creates a greater opportunity for a larger subsequent win. It doesn't replace lost funds, nor does it allow players to beat the house. Rather, it simply alters the psychological response associated with a losing streak by adding visual progression associated with that losing streak.

Maximum win potential of 10,000x & RTP of 97%

BGaming states that Book of Hidden Tombs has a 97% RTP and a max multiplier of 10,000x. The official player's hub for BGaming also shows that there is a max payout available of $250,000. There appears to be conflict regarding volatility. While BGaming's player's hub says that this game falls under high volatility, another part of their current catalog describes this game as low volatility. Most independent reviewers agree that this game is indeed high volatility. Operators may want to verify whether or not the volatility classifications shown in their versions align with BGaming's classifications.

Additionally, players can also purchase either standard free spins or super free spins if permitted by law. Standard free spins cost 100x the stake while super free spins cost 200x the stake. Also, players can select to increase their stake in order to better their chances of triggering free spins via the Chance ×2 button.

Why BGaming returned to Ancient Egypt

Another interesting aspect of releasing Book of Hidden Tombs is where it sits within BGaming's overall portfolio. Only last month, BGaming released Reel of Ra, yet another Egyptian-themed slot. Additionally, many Classic-branded titles were released throughout BGaming's August calendar. For viewers watching BGaming from New Zealand, this indicates that established themes continue to hold great commercial value. Suppliers don't always require an unfamiliar theme to separate themselves from others. Rather, suppliers can rely upon familiarity providing the basis for differentiation while utilizing innovative mechanics to create distinction.

This provides perhaps Book of Hidden Tombs' greatest argument for being identified separately from other slots using similar formats. Slots using ancient Egyptian gods, expanding symbols and scatters/wilds will be easily recognizable to experienced slot players. However, Book of Hidden Tombs utilizes the progressive multiplier to alter the well-known sequence found in typical book slots. Dead spins are made progressively more important through increasing multipliers up to 512x.

Among a large number of slots that utilize the book format, creating a multiplier that grows in importance through dead spins will be what distinguishes Book of Hidden Tombs from others. In addition to a 97% RTP and 10,000x maximum win, it allows BGaming to develop a modern variant on one of online casino gaming's longest-lasting formulas.