Bonanza Billion Merge Up+

Bonanza Billion Merge Up+ is a bright fruit-and-gem slot from BGaming, released on 24 September 2026. It plays on a 6x5 grid where 8 or more identical symbols pay anywhere on the screen, and every win triggers the Merge Up feature, which fuses the winning symbols into a new one. The RTP is 97.04%, the volatility is very high and the maximum win is 15,000x the bet.

Fruit, Gems And A Green Hillside

The grid sits in a golden frame lined with small lights, in front of a sunny green hill with giant fruit bursting on both sides of the screen. The symbols are glossy and easy to read: cherries, lemons, oranges, plums and watermelons are the low payers, while hearts, stars and blue and green gems pay the most. A purple bar above the reels shows the current win, and a small tally on the left of the screen keeps count of how many symbols of each type have paid during the spin.

How Wins Work

There are no paylines. The game counts the matching symbols on the grid at the end of the spin, and groups of 8-9, 10-11 and 12 or more pay different amounts. The paytable shows how steep the curve is: twelve or more green gems pay 50x the bet, blue gems pay 25x, stars 15x, hearts 12x and watermelons 10x, while the humble cherry pays 2x for the same count and 0.25x for a group of eight. If several symbol types win in the same spin, their values are added together.

Merge Up And Refilling

This is the heart of the game. When a combination pays, the winning symbols do not simply disappear. They merge into one new symbol, and that symbol is always one of the types already on the reels, with the more common types having a better chance of being picked. The empty spaces are then refilled with new symbols falling from above, and the remaining ones drop to the bottom. Refilling continues until no new winning group forms, and all the wins of the spin are added to the balance only when the sequence ends. In our demo, a spin with a few small groups grew into a 16.08 EUR total on a 2.00 EUR bet, with the tally on the left showing eight lemons, eight stars and nine cherries stacking up one after another.

The Clover Scatter

The rainbow four-leaf clover is the Scatter. Four or more of them pay on their own and start the free spins. At a 2.00 EUR bet the paytable shows 6 EUR for four clovers, 10 EUR for five and 200 EUR for six, which is 3x, 5x and 100x the bet. If a scatter pay and a normal win land in the same spin, you are paid for both.

Free Spins With Gift Multipliers

The number of clovers decides the size of the round: 4 scatters give 10 free spins, 5 give 20 and 6 give 30. The free spins are played at the same bet as the spin that triggered them, and the round adds the orange gift box multiplier symbol. A box can show x2, x3, x5, x6, x8, x10, x12, x15, x20, x25, x40, x50, x60, x80 or x100, and the multiplier applies to the whole win of that spin. When several boxes land together, their values are added, so a single cascade with two or three big boxes can be worth a lot. Three or more scatters during the round add 5 more free spins, and the number of retriggers is limited only by the maximum win.

Buy Bonus And Chance x2

Two extras are available next to the reels. Buy Bonus starts the free spins directly, with the choice of 10, 20 or 30 spins, and the price is shown on the button and changes with your bet. Chance x2 raises the chance of triggering the free spins on the base game, again for a price that depends on the bet. Only one of these options can be active at a time.

RTP, Volatility And Max Win

The theoretical RTP is 97.04%, which is above the average for a modern slot. The volatility is very high, so long quiet stretches are normal, and the wins that matter come from the free spins with stacked gift multipliers. The maximum win is 15,000x the bet, and a round that reaches it is paid at that cap.

Our View

Bonanza Billion Merge Up+ keeps the cheerful look of a classic fruit game and adds a cascade system that reshapes the grid after every win. It suits players who like pay-anywhere slots, enjoy watching symbols grow into better ones and are happy to wait for a bonus where the multipliers can climb as high as x100. Because of the very high volatility, it is best played with a patient budget, and the free demo above is a good way to see how the merging works before you play for real.

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