| RTP | 96.46% - Compare RTPs |
|---|---|
| Volatility | Low |
| Reels | 9 |
| Paylines | 40,503 |
| Bet Range | £0.10 - £10.00 |
| Features | Wilds, Scatters |
Gemmed Slot Review
Gemmed is a 9x9 cluster pays slot from Betsoft, released in September 2019. Rather than traditional paylines, it uses a cluster mechanic where wins form from groups of matching symbols touching horizontally, vertically, or diagonally. With 40,503 potential winning combinations on every spin and a max win of 21,667x your stake, it sits at the higher-ceiling end of Betsoft's catalogue.
This review covers the grid layout, how the cluster mechanic works, the free spins trigger, the Rainbow Wild, the Double Up feature, and what kind of player the game suits best.
Gemmed at a Glance
- Provider: Betsoft
- Release date: September 2019
- Grid: 9x9
- Win mechanic: Cluster pays (40,503 ways)
- RTP: 96.46%
- Volatility: High
- Max win: 21,667x stake
- Bet range: £0.10 - £10.00 per spin
- Bonus features: Rainbow Wild, Free Spins, Double Up gamble
The 96.46% RTP is above average for the category. High volatility paired with a large grid means the base game can string together several quiet spins before a cluster lands across a significant portion of the 9x9 space - but when it does, the payout potential is substantial. The combination of a wide grid, cluster mechanic, and high-ceiling max win makes this a game for players comfortable with variance.
Theme and Visual Design
Gemmed is set in an enchanted forest, which gives it a fairytale quality that distinguishes it from the more generic cut-gem aesthetic common in jewel-themed slots. The symbols are rendered in Betsoft's signature 3D style - polished stones in green, blue, red, purple, and gold, all catching light against a leafy background. The animations when clusters form are clean and satisfying, with gems clearing and new symbols dropping in from above to fill the vacated spaces.
The Rainbow Wild stands out visually - a large prismatic gem that sits across multiple cells when it appears. The scatter symbols follow a similar oversized logic, taking up more grid space than standard icons and making them easier to track across a 9x9 grid during a spin.
How the Cluster Pays Mechanic Works
On a standard payline slot, wins form left to right from reel one. Gemmed discards that structure entirely. Wins form when five or more matching symbols touch each other anywhere on the 9x9 grid. Adjacency counts horizontally, vertically, and diagonally, so a cluster can take any shape as long as each symbol in it connects to at least one other matching symbol.
Larger clusters pay more. A cluster of five pays at the base rate; extend it to ten, fifteen, or more matching symbols and the payout multiplies accordingly. Because bigger symbols physically occupy more cells on the grid, landing one of the oversized icons within a cluster effectively fills multiple positions at once - which is where the highest single-spin returns come from.
After each winning spin, the matched symbols are removed and new gems drop down to fill the gaps. This cascade mechanic means a single spin can produce multiple consecutive wins before the grid stabilises. Each cascade is a separate payout, and the chain can continue as long as new winning clusters keep forming from the refilled spaces.
Rainbow Wild
The Rainbow Wild substitutes for all standard gem symbols and can appear anywhere on the 9x9 grid. When it lands within an existing cluster, it extends the cluster size - which directly increases the payout for that win. A wild landing adjacent to a cluster that was two symbols short of the next payout tier can push it over that threshold and materially change the value of the spin.
The Rainbow Wild also participates in cascades. If a wild remains on the grid after a winning cluster clears, it stays in place for the next cascade and can contribute to subsequent clusters from its new position. This makes the wild more valuable the earlier it appears in a cascade chain.
Free Spins Feature
The free spins round triggers when a cluster of five or more scatter symbols lands anywhere on the grid. Five scatters awards 15 free spins. Larger scatter clusters award more - up to 50 free spins for the largest qualifying cluster. Because scatters follow the same cluster logic as standard symbols, they can combine with adjacent scatters across the full 9x9 space, giving every scatter that appears on screen a chance to contribute to the trigger count.
The feature can retrigger during the bonus round. Additional scatter clusters landing during free spins add more spins to the remaining count, meaning a session in the feature can extend significantly beyond the initial award. All standard game mechanics - cascades, the Rainbow Wild, and cluster pay scaling - remain active throughout the free spins round.
Double Up Gamble
After any winning spin, Gemmed offers a Double Up option. Selecting it moves you to a separate gamble screen where you attempt to double the win by guessing a card colour or suit. A correct guess doubles the prize; an incorrect guess forfeits the win from that spin.
The gamble feature is optional on every win and can be declined without any effect on the base game. Players who prefer to bank wins steadily can ignore it entirely. Those who use it should be aware that it carries real risk - forfeiting a large cluster win on an incorrect guess is a material setback in a high-volatility game.
Mobile Performance
Gemmed is built on HTML5 and runs in any modern browser without a download. The 9x9 grid scales well to portrait and landscape orientations on mobile. Betsoft's 3D rendering is more resource-intensive than simpler 2D slots, so performance on older budget phones can drop slightly, but on any mid-range device from 2020 onwards the game runs without issue. Bet adjustments, spin controls, and the paytable are all accessible through the same interface on desktop and mobile.
Volatility and Player Suitability
The high volatility classification means Gemmed rewards patience and a larger session bankroll more than it rewards a quick spin routine. The cascade mechanic creates natural variance even within individual spins - a single triggering spin can produce a chain of cascades, or it can resolve in a single small cluster and go quiet. Players targeting the free spins feature should expect the scatter cluster to take time to appear on a 9x9 grid, particularly given that five matching scatters need to connect.
The 96.46% RTP is a genuine positive. At that rate, the house edge is narrow relative to many comparable high-volatility titles. The 21,667x max win ceiling means the upside during a good free spins session is significant. This is a game that suits players who are comfortable sitting through variance to target the high-ceiling bonus round rather than players looking for frequent small wins.
Verdict
Gemmed takes the cluster pays format that games like Aloha! Cluster Pays popularised and wraps it in Betsoft's polished 3D production style. The 9x9 grid gives the mechanic more room to breathe than smaller cluster grids, and the cascade system adds another layer of potential to each spin beyond the initial cluster formation.
The Rainbow Wild integrating seamlessly with the cluster logic rather than functioning as a separate bonus element is a clean design choice - it does exactly what a wild should do in a cluster game. The free spins trigger requiring a five-symbol scatter cluster is demanding, but the reward of up to 50 free spins with retrigger potential justifies the difficulty of the trigger condition.
If you prefer cluster pays over traditional paylines and want a higher production quality than the genre average, Gemmed is worth a session. Players after frequent triggers and steady-return gameplay will find high volatility a poor fit regardless of the RTP figure.
Where to Play Gemmed
We're currently updating our casino list for Gemmed. In the meantime, browse our full casino reviews or check out current free spins offers.
Gemmed RTP and Variance
Gemmed has an RTP of 96.46%, which is above average. See our highest RTP slots for the best returning games. Low volatility means frequent smaller wins - your balance stays steadier and sessions last longer. See more low volatility slots.
At the minimum bet of £0.10 per spin, a £10 deposit gives you 100 spins with a statistical expected return of £9.65. Read our slot betting strategy guide for tips on managing your bankroll.