Book of Hidden Tombs

Book of Hidden Tombs Slot

Book of Hidden Tombs takes BGaming back to one of the oldest formulas in online slots, combining the familiar Egyptian setting with gameplay that owes almost everything to the classic Book-style format. There isn't much attempt to disguise the inspiration either: a 5x3 grid, 10 paylines, expanding symbols and an Egyptian cast of Ra, Anubis and Bastet make this immediately familiar territory. The presentation is competent enough, but anyone who has spent much time with Book slots will have seen variations of this setting countless times before.

The Book acts as both Wild and Scatter, substituting for regular symbols while also triggering the bonus when 3 land. This awards 10 Free Spins, with one regular symbol randomly selected as the Golden Expanding Symbol before the feature begins. Whenever enough of the chosen symbol appears to form a win, it expands across its reels and pays across all 10 paylines. It's the traditional Book mechanic with very little changed, although there is still something satisfying about seeing a premium symbol selected and waiting for several reels of it to appear.

Super Free Spins are where BGaming finally adds something different. These can randomly replace the regular feature when 3 Scatters trigger the bonus and retain the Golden Expanding Symbol mechanic, but introduce a Progressive Multiplier. It begins at x1 and doubles following every non-winning spin, creating an interesting situation where a run of otherwise disappointing spins can actually increase the value of the next win. It doesn't reinvent the format, but it gives the bonus considerably more tension than simply repeating the standard expanding-symbol feature yet again.

There are several ways to increase access to the bonuses. Paying an additional 0.5x activates Chance x2 and doubles the probability of triggering Free Spins, while the regular Free Spins can be purchased for 100x the bet and Super Free Spins for 200x where feature buys are available. The numbers are also considerably healthier than those found in many modern releases, with a 97% RTP, high volatility and a max win of 10,000x the bet.

Book of Hidden Tombs is difficult to get particularly excited about because almost everything surrounding its Super Free Spins has been done countless times before. The Egyptian theme is about as predictable as it gets, while the standard expanding-symbol bonus is essentially the same formula that Book slots have been using for around two decades.

The Progressive Multiplier at least gives the Super Free Spins a reason to exist, and having it double after losing spins adds a welcome high-risk element to an otherwise extremely traditional game. Throw in the excellent RTP and respectable 10,000x ceiling, and there are some positives here. It still feels more like another variation on an ageing formula than a genuinely fresh release, but anyone specifically looking for old-school Book gameplay gets a reasonably strong version of it.