Mighty Gorilla is a jungle slot from Booming Games, released on 4 November 2021, playing on a 6×4 grid with 30 fixed paylines. The Mighty Gorilla slot carries an RTP of 95.49%, which is below the UK industry benchmark of approximately 96%, with a maximum win of 3,000x stake and high volatility. The three active features are Random Wilds (which stack up across the reels), Bursting Wilds (expanding Wilds that expand vertically to cover an entire reel from top to bottom), and the Minor Elimination feature, which removes all low-value symbols from the board. All three trigger at higher frequency during the free spins round, which is activated by three or more Scatters awarding up to 20 spins. The 3,000x maximum win is reached when the screen fills with Wilds or Gorilla symbols. The below-benchmark RTP is relevant context before playing. Gambling Zone rates it 5.5/10. Find the best regulated UK sites to play Mighty Gorilla below. In this Mighty Gorilla slot review, we examine Booming Games' jungle slot, the three-feature mechanic system, and whether a 3,000x ceiling with high volatility justifies the below-benchmark 95.49% RTP. Find the best regulated UK sites to play Mighty Gorilla below.



Mighty Gorilla runs on a 6×4 grid — six reels and four rows — with 30 fixed paylines paying left to right. The larger grid format compared to the standard 5×3 provides a wider base for the Random Wild feature to distribute across, which is the game's primary base game mechanic. Stakes run from £0.30 to £270 per spin.
The RTP of 95.49% is below the UK industry benchmark of approximately 96%. For a high-volatility slot game, a below-benchmark RTP means the player-unfavourable gap from the math model is larger than comparable titles, and that adds up over a session. The maximum win of 3,000x stake is reached when the screen fills with Wilds or Gorilla symbols — a ceiling that requires the full board Wild scenario to hit. Confirm the RTP setting in the game's information panel before playing, as different casino operators may apply different configurations.
Mighty Gorilla is available at some of the top online casinos in the UK right now. Here are the best slot sites hosting the game:
Mighty Gorilla is set in a jungle environment with the gorilla as the centrepiece — a large, impressively drawn alpha symbol that anchors the visual hierarchy of the paytable. The 6×4 grid gives the game a wider visual footprint than a standard 5×3 layout, and the Bursting Wild animation — where a Wild expands vertically to cover additional rows — is clear and immediate. The Random Wild drop animation, which places Wilds at multiple positions simultaneously, is likewise legible across the larger grid.
The paytable below shows multiplier values per winning combination (expressed as multiples of stake):

Blue Spade
3 of a kind: 0.18x / 4 of a kind: 0.45x / 5 of a kind: 0.90x / 6 of a kind: 1.80x

Green Club
3 of a kind: 0.27x / 4 of a kind: 0.63x / 5 of a kind: 1.80x / 6 of a kind: 2.70x

Orange Heart
3 of a kind: 0.36x / 4 of a kind: 0.90x / 5 of a kind: 1.80x / 6 of a kind: 3.60x

Red Diamond
3 of a kind: 0.45x / 4 of a kind: 1.08x / 5 of a kind: 2.70x / 6 of a kind: 4.50x

Old Explorer
3 of a kind: 0.54x / 4 of a kind: 1.08x / 5 of a kind: 2.70x / 6 of a kind: 5.40x

Female Explorer
3 of a kind: 0.63x / 4 of a kind: 1.44x / 5 of a kind: 3.60x / 6 of a kind: 6.30x

Male Explorer
3 of a kind: 0.72x / 4 of a kind: 1.44x / 5 of a kind: 3.60x / 6 of a kind: 7.20x

Gorilla
3 of a kind: 0.99x / 4 of a kind: 1.80x / 5 of a kind: 4.50x / 6 of a kind: 13.50x
Mighty Gorilla is built on HTML5 and plays in mobile and tablet browsers without a download. The 6×4 grid is wider than a standard slot format and benefits from landscape orientation at mobile sizes, though it also adapts to portrait view. The Random Wild drop and Bursting Wild expansion animations are both clear at mobile screen sizes, and the 30-payline structure does not add visual clutter.



Mighty Gorilla has three random base game features — Random Wilds, Bursting Wilds, and Minor Elimination — plus a free spins round triggered by Scatter symbols. All three features activate at higher frequency during free spins than in the base game.

At random points during a base game spin or free spin, up to 24 Wild symbols are deposited at random positions across the 6×4 grid. Each Random Wild substitutes for all standard paying symbols and contributes to any winning combinations on the paylines it covers. The randomness of both the quantity (up to 24) and the positions means the feature can range from a minor addition to a significant win contributor depending on what lands.
Bursting Wilds are randomly triggered Wild symbols that expand vertically when they land, covering the entire reel from top to bottom. A Bursting Wild covering all four rows on a reel creates a full stacked Wild on that reel, simultaneously contributing to every payline that passes through it.
The Minor Elimination feature randomly removes the lower-value symbols from the reel set during a spin. With low-value symbols absent from a given reel evaluation, the probability of higher-value symbols contributing to a win increases for that result. The Minor Elimination feature activates more frequently during the free spins round.
Triggered by landing three or more Scatter symbols anywhere on the 6×4 grid. The number of free spins awarded scales with the number of triggering Scatters: three Scatters award 8 free spins; four Scatters award 12; five Scatters award 16; and six Scatters award 20 free spins. During free spins, the Random Wilds, Bursting Wilds, and Minor Elimination features all activate at a higher rate than in the base game, making the bonus round the primary source of larger win outcomes.
Let me be direct about the maths here. A 95.49% RTP on a high-volatility slot is not a competitive position. The benchmark for UK players is approximately 96%, and below that level the house edge per spin is meaningfully higher than the market average. The maximum win of 3,000x is reached by filling the screen with Wilds or Gorilla symbols — a scenario that is achievable in theory but requires the full board condition. That ceiling is still on the modest side for a game classified as high volatility, and when you combine it with the below-benchmark RTP, the risk-reward structure is less compelling than comparable titles.
What Mighty Gorilla has going for it is a clean feature design. The three mechanic pillars — Random Wilds, Bursting Wilds, Minor Elimination — are easy to understand, the 6×4 grid gives the Random Wild drops a wider canvas to land meaningfully, and the free spins round does what a free spins round is supposed to do by amplifying the existing mechanics. The game is playable, and players who simply want a jungle slot with familiar feature types will find the experience competent.
But in a market where above-benchmark RTP slots at comparable or higher volatility are readily available, the math model is a real disadvantage. The rating reflects that honestly.
Rating: 5.5
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