Lemur Levels Slot Review

Lemur Levels is a 7x7 cascading cluster slot from Bullshark Games, released on 3 March 2026 and built and distributed on Hacksaw Gaming's OpenRGS platform. The headline numbers are a default RTP of 96.31%, a hit frequency of 36.45% and a maximum win of 15,000x the stake. The demo above runs the studio's own free-play build with a play-money balance, so you can watch the cascade engine and the booster logic behave without risking anything. Nothing you win or lose in the demo is real, and the game itself is 18+ only.

The theme is exactly what the title suggests: a cartoon lemur loose in a fruit-heavy jungle, bright colours, a bouncy loop. That is marketing. What follows is the maths, which is the only part that decides whether your balance lasts.

How the game plays

You are looking at a 7x7 grid with cluster pays. Five or more matching symbols connected to each other form a win, those symbols are removed, and new ones drop in to fill the gaps. If the refilled grid produces another cluster, it pays again, and the chain continues until no new clusters form. There are no paylines and no ways counts here, so position matters more than reel order: a loose scatter of six fruit across the grid is worth nothing unless the pieces touch.

The core loop is therefore cheap, frequent nibbles punctuated by cascade chains that occasionally run long. That is the standard 7x7 cluster rhythm, and Bullshark has not tried to reinvent it. What they have added sits on top of it.

The features, and what each does to the maths

Lemur King symbol

The Lemur King lands only in the base game and substitutes for any paying symbol. Its real job is not substitution, though — it is the trigger. Whenever a Lemur King is part of a winning cluster, it activates one of five random grid boosters. Land several Lemur Kings in the same win and each one activates a different booster. Once all five are active, further Lemur Kings in that win do nothing extra.

Grid boosters

The five boosters do things like swap symbols, add Wilds, reload the grid or apply a win multiplier. They are applied one at a time after the grid has settled, with the grid settling again between each application, and in random order when several fire together. The multiplier booster is the exception: it applies immediately on activation and, crucially, does not deactivate — it stays live for every subsequent win in that spin. Every other booster switches off after it is used and must be reactivated by another Lemur King.

Mathematically this is the game's variance engine inside the base game. A single Lemur King on a small win is a shrug. A Lemur King arriving mid-cascade, pulling the multiplier, and then another arriving to add Wilds into a half-cleared grid is where base-game spikes come from. Because the multiplier persists for the rest of the spin, the sequencing matters enormously — an early multiplier compounds everything after it, a late one does not.

Free Spins

Three or four FS Scatter symbols trigger the Free Spins feature, which is structured as a climb through up to four levels. Each level widens the multiplier range and improves your chances of climbing further. In practice that means the feature's value is heavily back-loaded: a round that stalls on level one is a token return, while one that reaches the top tier is where the 15,000x ceiling actually lives.

Reading the maths

Start with RTP. The default build returns 96.31%, which is a genuinely competitive figure and sits at the top of Bullshark's own range. But the game also ships in a 94.34% version, and the operator — not the studio, not you — chooses which one to run. That is nearly two full percentage points of edge, and it is invisible unless you look. Open the game's info or paytable screen at your casino before you stake anything and confirm which number is listed. If it says 94.34%, play somewhere else.

The 36.45% hit rate means a little over one spin in three returns something. On a cluster game that figure is flattering: many of those returns will be a single five-symbol cluster of a low-pay fruit worth a fraction of your stake. Treat the hit rate as a measure of how often the screen moves, not how often you profit.

The bonus frequencies are where the session shape becomes clear. In the base game, any bonus arrives once per 250.3 spins on average. Jungle Journey, the common of the two, is 1 in 270.5. Treetop Triumph is 1 in 3,352.9 — a figure most players will never reach organically. A 500-spin session averages two bonuses; a 100-spin session will most often deliver none at all. Budget for the dry stretch, because the base game's Lemur King boosters have to carry you through it.

If your casino offers the BonusHunt FeatureSpins mode, the rates shorten dramatically: any bonus at 1 in 74.6, Jungle Journey at 1 in 80.5 and Treetop Triumph at 1 in 1,021.8. Note the cost, though — BonusHunt FeatureSpins returns 96.24%, slightly under the default base game. The buy-in feature RTPs are tight and consistent across the board: Fruit Blast FeatureSpins 96.28%, Jungle Journey 96.22%, Treetop Triumph 96.28%. No trap doors, but no bargains either.

Bullshark has not published a usable volatility rating for Lemur Levels, so I will not guess one. What the numbers do say is this: a 15,000x ceiling attached to a top bonus that lands once in roughly 3,353 base spins is not a soft game, whatever the lemur's face suggests. Stake accordingly — small units, long sessions, and no expectation that the ceiling is reachable on a casual budget.

How it compares within the range

Against its own stablemates Lemur Levels takes the best default RTP of the four and matches Piggy Cluster Hunt's 15,000x ceiling, giving up a little hit frequency in exchange. That is a defensible trade. If you want to see how the rest of the catalogue stacks up, the wider Bullshark Games range runs from 96.16% to 96.35%, so the studio is consistent at the top line even when the mechanics change.

Who it suits, who should skip it

It suits players who like cluster cascades and want a base game with something to watch between bonuses — the Lemur King booster system does genuine work there, and the persisting multiplier gives individual spins a tail that most cluster games lack. It suits patient bankrolls on small units.

Skip it if you want frequent feature access without paying for it: 1 in 250.3 is a long wait. Skip it if you dislike randomised feature selection, because which booster you get is out of your hands. And it is not available to UK players — the sheet lists MGA Malta, Curacao, Denmark, Latvia, Spain, the Netherlands, Ontario, Romania, Greece, Georgia, Portugal, Colombia and Buenos Aires Province, with the UK, Sweden, Germany, Croatia, Italy and Brazil excluded.