Action Boost: Gorilla Gems

  • Min stake: 20p
  • Max stake: £50
  • Max payout: £250,000
  • Jackpot: Yes
  • Paylines: 20-40
  • Special features: Random Reveal, Banana Gem Upgrades, Banana Gem Free Spins

Fancy spinning for prizes fit for the king of the jungle? Jump onto the extreme jungle-themed reels of this action-packed slot and take a spin from just 20p. Keep an eye out, gold banana gems hide behind the Random Reveal symbols which can award you immediate bonus credits. Trigger any combination of the Banana Altars to get full expanding reels, instant prizes and so much more!

Will the mighty gorilla lead you to jackpot prizes reaching up to 5,000x the bet? Play Action Boost: Gorilla Gems online.

Grabbed all the bananas you could? We’ve got many more online slots and games for you to play.  

Random Reveal Symbols

On every spin, Random Reveal symbols reveal one of the following symbols after all reels land. Random Reveal symbols can also reveal a Green, Purple, or Red Banana Gem during the Base Game. This feature can also reveal a Gold Banana Gem during the Banana Gem Free Spins. That symbol position will behave as both the revealed symbol and a Banana Gem.

Banana Gem Free Spins

Banana Gems can only appear as a result of a Random Reveal. Whenever one or more Banana Gems appear there is a chance for Banana Gem Free Spins to be triggered. Each Banana Gem collects to the altar of the same colour above the reels. The combination of Banana Gems that collect when the Banana Gem Free Spins are triggered determines the Banana Gem Upgrades awarded. Bet multiplier is the same as the game that triggered the feature.

Green Banana Gem Upgrades

5 Free Spins are awarded. Every Gold Banana Gem that appears during this feature awards a bonus credit prize. Gold Banana Gems can only appear as a result of a Random Reveal. 40 Lines are played during this feature. All reels grow to a height of 6 symbol positions. Any reel with a Wild symbol appearing is nudged so that all positions on that reel contain Wild symbols. All wins are paid after the reels have been nudged and Random Reveal symbols have been revealed.

Red Banana Gem Upgrades

10 Free Spins are awarded. Every Gold Banana Gem that appears during this feature will award a jewel or bonus credit prize. Gold Banana Gems can only appear as a result of a Random Reveal.

  • Collect 6 Red Jewels to win the MEGA jackpot.
  • Collect 5 Purple Jewels to win the MAJOR jackpot.
  • Collect 4 Blue Jewels to win the MINOR jackpot.
  • Collect 3 Green Jewels to win the MINI jackpot.

If all jewel prizes for a jackpot are collected, the corresponding jackpot is awarded and the collected jewels for that jackpot are reset.

Purple Banana Gem Upgrades

5 Free Spins are awarded. Every Gold Banana Gem that appears during this feature awards 1 free spin, 2 free spins or a bonus credit prize. Gold Banana Gems can only appear as a result of a Random Reveal. Every spin a random multiplier of 2, 3 or 5 is awarded. Line wins and bonus credit prizes are multiplied by the random multiplier.

Multiple Banana Gem Upgrades

Free Spins are played with all Banana Gem Upgrades triggered on a single base spin. If a Red Banana Gem Upgrade is triggered, then 10 Free Spins are awarded. Otherwise, 5 Free Spins are awarded. The random multiplier from the Purple Banana Gem Upgrade applies to all line wins and bonus credit prizes and does not apply to jackpots.


For information on symbols and base game instructions, please see in-game help menu.

Malfunction voids all plays and pay. RTP = 94.20%

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