Gems Bonanza Demo & review

In Gems Bonanza the coloured mark behind a symbol matters more than the symbol: win on a mark, and one of five spin features rewrites the grid once the tumbles stop. Pragmatic Play released the 8x8 cluster game in October 2020. It suits players who want a base game that changes shape from spin to spin, more than those who live for free spins, because its bonus, Gold Fever, is a ladder to climb rather than a batch of spins.

Gems Bonanza at $1 before our first spin: the 8x8 scroll of gems, the Gold Fever buy on the left and the mask idol on the right. FluxPlays demo test, 28 October 2026.

How Gems Bonanza works

Blocks of five or more matching gems touching horizontally or vertically pay, and every win starts a tumble: the winners explode, the rest fall and new gems drop in. Pays rise in nine bands, from 5 symbols to 25 or more:

Small blocks of the lower gems are the everyday result. The wild never lands by itself: it arrives only through two of the spin features, and it can join several winning blocks at once.

Spin features: what the coloured marks do

In the base game, coloured marks can appear behind symbols. A win that uses a marked symbol wins that mark's feature, which plays after every tumble from the spin has finished:

Several features won on one spin play in that fixed order, Nuclear first and Lucky Wilds last, so the blocks and wilds always land on the grid the earlier features left behind. On our spin 100, a win on blue and green marks brought a Nuclear refill and then Lucky Wilds. The last tumble of that sequence paid $8.30 of the spin's $9.15.

Base spin 100 settled: Nuclear and Lucky Wilds played after the tumbles, and the win list adds up to $9.15, our best base spin. FluxPlays demo test, 28 October 2026.

How Gold Fever works

Gold Fever is triggered by volume, not scatters. Every winning symbol that explodes on a spin, through tumbles and spin features alike, fills the Gold Fever meter, and the meter resets to zero when the tumbles stop. Collect 114 on one base spin and Gold Fever starts after that spin ends.

The feature is a ladder. Each level plays all five spin features once, in their fixed order, with a win multiplier on everything, and the winning symbols collected during the level decide whether you climb:

Miss a target and the feature ends, and it also ends once level 5 is played. So the round asks one question at every step: did five feature spins explode enough gems? The biggest multipliers sit at levels 4 and 5, behind three targets in a row. Gold Fever can also be bought outright, and a bought round starts at level 1 like a natural one but faces slightly higher targets from level 3 up.

Rules page 4 in our demo session: the Gold Fever level targets, natural and bought. FluxPlays demo test, 28 October 2026.

RTP, volatility and max win

The in-game rules put the RTP at 96.55% and label the game medium volatility. Pragmatic's own game page shows 96.51%, so the version can differ between casinos, and the rules in the game you load are the figure to trust. Most review sites call Gems Bonanza high volatility, which the game's own label contradicts. There is no separate RTP for the buy. We could not confirm a maximum win: the rules pages we read and Pragmatic's game page give none, so the table leaves it out.

Our Gems Bonanza demo test

The spin features carried our base game. They triggered on eight spins, Wild Gem most often, and those eight paid almost three quarters of everything the base game returned. The four best spins all had one. Around them a third of spins paid, mostly small blocks, and spins 75 to 89 paid nothing at all.

The meter never came near a trigger, peaking at 75 of the 114 points on spin 100. The bought Gold Fever then showed what the ladder demands. Level 1 played all five features at its opening multiplier but collected only 52 of the 116 symbols level 2 needs, so it ended there for $16.00. Levels 2 to 5 stayed out of reach, so everything about them here comes from the rules. Treat all this as one session's play, not a measure of the RTP.

Level 1 of our bought Gold Fever: every socket on the idol lit and the Nuclear feature, first in the fixed order, sweeping the grid. FluxPlays demo test, 28 October 2026.

The bought Gold Fever ends after level 1: $16.00 for the round, with the win list showing Lucky Wilds and Colossal Symbol pays at x2. FluxPlays demo test, 28 October 2026.

Is Gems Bonanza worth playing?

For a player who likes the grid to change under them, yes; for a bonus chaser, no. The five marks give the base game more variety than most cluster games, and they are where our session's money came from. Gold Fever is harder to love. Its opening level pays only double, every later level needs a fresh haul of winning symbols, and a bought round can be over after five feature spins. For us, buying it makes sense only to see the features play together.

Pick Reactoonz if you like a meter, charged by winning symbols, that fires grid features and a 3x3 wild with no bonus round to wait for. Pick Gems Bonanza if you want features you can see coming from the marks, plus a bonus ladder you can buy.

In the demo, watch a few spins where a mark wins. Seeing how the five features stack in their fixed order explains the game faster than buying Gold Fever does.