BonanzaBillionMergeUp+
Every source we read lists Bonanza Billion Merge Up+ at 97.04%. Very High volatility, 15,000× maximum win.
The highest configuration any source lists. BGaming, SlotCatalog, BigWinBoard list it.
7.9 out of 10, built from the figures.
- Return to player35% of the rating 9.5
- Win potential20% of the rating 7.4
- Risk and reward15% of the rating 2.5
- Feature depth20% of the rating 8.3
- Transparency10% of the rating 8.5
Our editorial rating for slots, computed the same way for every game from the figures on this page: the return (its top and its lowest configuration), the top win, whether that win rewards the game's volatility, the depth of its features, and how much of its data the studio publishes itself. Where a figure is not available, that part is left out rather than guessed. It rates the game, not a casino or the studio, and it is not a prediction of what you will win.
What the figures say about Bonanza Billion Merge Up+.
Our reading
BGaming publishes one return for Bonanza Billion Merge Up+, 97.04%, and SlotCatalog and BigWinBoard list the same. The studio rates it very high volatility and BigWinBoard agrees; SlotCatalog says high.
SlotCatalog and BigWinBoard describe a 6×5 pays-anywhere grid with tumbling wins. The studio's Merge Up mechanic turns winning adjacent clusters into random symbols on the grid. BigWinBoard puts the base-game hit frequency at 1 in 2.59, so small wins are frequent even though the game is rated very high.
Four, five or six scatters give 10, 20 or 30 free spins, and three or more during the round add 5. Multipliers from ×2 to ×100 appear in free spins only, which puts most of the game's upside in the bonus. BigWinBoard prices the free-spins buy at 100× the bet; BGaming confirms the buy and a Chance ×2 option but not the price.
Sources disagree on the top win: BGaming publishes 15,000× and SlotCatalog matches, while BigWinBoard lists 10,000×. We use the studio's figure, which also fits its €255,000 top prize at the €17 maximum stake. The €0.20 to €17 range is agreed by both third-party sources; BGaming does not publish it.
Core mechanics Studio
- Merge Up™: winning adjacent clusters transform into random grid symbols
- Tumbling
Bonus features Studio
- Free Spins
- Multipliers (Free Spins only)
- Chance ×2
- Buy Bonus
Free spins Studio
4, 5, 6 Scatters trigger 10, 20, 30 Free Spins. If 3+ Scatters drop during the round, 5 additional Free Spins are triggered.
Bonus buy Third-party
Buy Free Spins: 100× bet (BigWinBoard)
Multipliers Studio
×2 to ×100, Free Spins only
3 sources, one story.
The studio's own page is read first. Third-party databases are research sources: we name them, and do not link to them. A studio can supply a game in more than one return configuration, and the casino chooses one. A higher figure at one source and a lower one at another usually means they read different configurations, not that one is wrong.
What an hour of this game is expected to cost.
That is the maths, not a prediction — a single session can end far above or below it.
Thirty seconds, before your first spin.
What people ask about this game.
The sources we read list 97.04%. The return that applies to you is the one printed in the game rules at your casino.
15,000× the stake.
Very High. Higher volatility means longer dry runs between wins and bigger swings in a session.
Because a studio can ship several configurations and each casino chooses one. A review that quotes a single figure is quoting one configuration.
Where every figure on this page comes from.
- BGaming — official game pageRead · 5 Oct 2026
- SlotCatalogResearch source, not linked · 5 Oct 2026
- BigWinBoardResearch source, not linked · 5 Oct 2026
Velven links only to studios, regulators and neutral sources. Databases and review sites we read for research are named here and never linked. Spotted something out of date? Tell us.
The verdict.
Bonanza Billion Merge Up+ is a very high-volatility BGaming game released in September 2026, with a 6×5 layout and a maximum win of 15,000× the stake. The sources we read list a single return for it. The figure that applies to you is the one printed in the game rules at your casino. The sources agree on the figures shown.Open the game rules before you play and check the return printed there.