Bonanza Billion Merge Up+ Slot Review — BGaming

This review is based on pre-release promotional material provided by BGaming. Details may change before or at launch on 24th September 2026. A full review will follow once the game is live.

Fingers crossed the symbol merges into the one you want.

BGaming grafts its Merge Up™ mechanic onto the beloved Bonanza Billion visual identity for Bonanza Billion Merge Up+, a pays anywhere slot built on player feedback from the existing series. The twist is genuinely interesting — winning combinations don't simply disappear and refill, they merge into a randomly selected symbol drawn from whatever is currently on the grid before disappearing. That random merge generates a new symbol in place of the win, potentially extending chains or setting up the next cascade in an unpredictable way. At very high volatility, an exceptional RTP of 97.04%, and a 15,000x max multiplier, this is the Bonanza Billion series at its most mechanically ambitious — and the randomness of the merge outcome is both the slot's greatest charm and its most honest source of tension.

Core Gameplay

Bonanza Billion Merge Up+ runs on a pays anywhere grid where winning symbol combinations pay out regardless of reel position. The Merge Up™+ mechanic is what separates this from a standard scatter pays format. After a winning combination pays out and the symbols disappear, they don't simply leave empty positions for new symbols to drop into — instead the win generates a single random symbol drawn from whatever symbol types are currently visible on the remaining grid. This merged symbol lands in place of the win, adding a new symbol of an unknown type before the next cascade phase. The randomness of the merge is the mechanic's defining tension: a high-value symbol could merge into another high-value type to extend the chain, or it could produce something that ends the cascade entirely. The grid state at the moment of merge directly affects the probability of what appears, since the merge draws from symbols currently present — a grid dense with high-value symbols gives better odds of a valuable merge outcome.

Bonus Features

Free Spins trigger on 4 or more Scatter symbols, with spin counts scaling by scatter count — 4 scatters for 10 spins, 5 for 20, and 6 for 30. Landing 3 or more Scatters during the feature awards 5 additional spins. Multiplier symbols are exclusive to the Free Spins round, landing with random values between 2x and 100x. Multiple Multiplier symbols landing on the same spin have their values added together and the combined total applied to the spin's full win at the end of resolution — keeping the math clean while still delivering significant amplification on multiplier-heavy spins.

Feature Access & Buy Options

Buy Bonus provides direct Free Spins access at a price that adjusts automatically to the current bet. Chance x2 raises the stake to double the natural scatter trigger frequency, available only when Buy Bonus is inactive.

Next Steps for This Review

At launch the review will be updated with the full grid layout, how the random merge symbol distribution plays in practice across a long base game session, whether the merged symbol can itself contribute to a new winning combination immediately, and how the Multiplier symbol frequency during Free Spins feels given the very high volatility and 1 in 386 natural trigger rate. A final score and full gameplay analysis will follow once hands-on time with the game is available.

Full gameplay analysis and a final score will follow the launch.