Crazy Gorilla Boom

Crazy Gorilla Boom Slot Review

A gorilla the size of a garden shed grins out from a sunlit jungle clearing, vines wrapped around the reel frame and dynamite sticks framing the title, and Spin Joy Games has dressed him in the glossiest cartoon jungle you’ll see this year.

The dressing is doing a lot of work, because the skeleton underneath it is nearly thirty years old. Nine fixed paylines on a 5×3 grid is a layout most studios retired a decade ago, and slotting two separate bonus rounds, three optional boosters and a five-step gamble ladder on top of that few lines is a bet that the machinery matters more than the maths. It’s a bet worth arguing about, and it’s an argument worth having before you spin.

Base Game & Features

Nine fixed lines, all paying left to right, is the whole structure of the base game. That’s a deliberately narrow layout for a 5×3 grid, and it shows in the paytable: with so few routes to a win, each symbol has to carry real weight. Only the highest combination on a line counts.

Symbol Values

Pays are shown as multiples of the line bet for three, four and five of a kind:

• Leopard: 15x, 20x, 50x
• Snake: 5x, 10x, 15x
• Bananas: 2x, 5x, 10x
• Toucan: 1.5x, 2x, 5x
• Coconut / Papaya: 1x, 1.5x, 2x
• Pineapple / Mango: 0.5x, 1x, 1.5x

The gap between the Leopard and everything beneath it on that list is steep. On a grid this narrow, the top symbol does most of the work, and the fruit at the bottom is small change by comparison.

Wild Symbol

The Wild appears naturally on reels two, three and four only, substitutes for everything except the Scatter and the Bonus symbol, doesn’t form its own wins and doesn’t multiply anything it helps complete.

Gamble Feature

After any winning spin there’s a GAMBLE button. Guess the colour of a face-down card, red or black, and the win doubles; guess wrong and the originating win is gone. Up to five consecutive gambles are allowed, so a small win can be pushed up the ladder five times.

It doesn’t run after a purchased feature, only on organic wins. That’s the whole rule set, and it’s an old one, but five steps of doubling on a nine-line game gives patient players a route from a token payout to something meaningful.

Crazy Gorilla Boom Bonuses & Free Spins

Free Spins

Three or more Scatter symbols anywhere on the reels award 10 Free Spins, and the count is 10 no matter how many Scatters land. The round plays out at the bet and lines of the triggering spin.

The hook is the Chest symbols. During Free Spins, Chests land carrying multipliers, and the Gorilla collects their combined value and adds it to the win. Every Chest that appears is gathered rather than paid as a line, so the round builds a running total instead of relying on the nine lines.

Banana Pull Bonus Game

Three Bonus symbols, the Golden Ropes, on reels one, three and five open the Banana Pull Bonus Game. Five ropes hang above the Gorilla, and you select them one at a time, each rope pulled once.

Bananas on a rope award a cash prize that adds to the running total. A Brick removes a life. When the lives are gone, the round ends and the total pays out. It’s a pick-me at heart, but the lives give it a countdown shape most pick rounds don’t have.

Hard Hat

The Hard Hat is an extra life. A standard-triggered Bonus Game starts with one life and no hat, so the first Brick ends it. Entries through the Buy Feature, the Bonus Booster or the Combo Booster start with the Hard Hat already on: the first Brick knocks the hat off, and only the next Brick ends the round.

One quirk worth knowing: a Bonus Game triggered via the Free Spins Booster starts with one life, not the hat. The boosted free spins don’t carry the extra safety net.

Buy Feature

Both bonus rounds can be bought outright from the base game:

• Buy Free Spins: 10 Free Spins for 70x the bet
• Buy Bonus Game: Banana Pull entry with the Hard Hat for 70x the bet

Identical prices for two very different rounds is a fair arrangement. The bought Bonus Game carries the Hard Hat, so it’s the steadier of the two purchases, while the bought Free Spins leans on Chest multipliers for its ceiling.

Boosters

Three boosters can be switched on before a spin:

• Free Spins Booster: increases the chance of triggering Free Spins, 5x bet
• Bonus Booster: increases the chance of triggering the Bonus Game, 5x bet
• Combo Booster: increases the chance of both, 10x bet

Only one booster can be active at a time, and all wins on a booster spin are calculated on the total bet. The Combo Booster at 10x is the interesting one: it’s cheaper than either buy by some distance and keeps both doors open, at the cost of a trigger rather than a guarantee.

Our Honest Verdict

Overall Rating: 7.1/10

Crazy Gorilla Boom is a game of waiting, and then a burst of activity that isn’t waiting at all. That’s the appeal, and it’s the honest pitch: you sit through a lean nine-line base game for two bonus rounds that are more inventive than a jungle gorilla has any right to expect. When the Gorilla finally gets to collect, it feels earned.

The strength is how differently the two rounds behave: one builds a running total of collected multipliers, the other is a rope-pulling endurance test where the Hard Hat genuinely changes the maths. The weakness is everything between them. Nine lines and a paytable that collapses below the Leopard mean the base game pays small and rarely, and the gamble ladder is the only thing standing between you and a string of two-line wins.

This one’s for players who grew up on fixed-line fruit machines and want the bonus round budget of a modern release, and for anyone who enjoys a pick round with actual stakes. Players who want frequent action on every spin should look elsewhere. The Gorilla is patient, and he’s asking you to be.

Crazy Gorilla Boom FAQs

• How many paylines does Crazy Gorilla Boom have?

  Crazy Gorilla Boom has 9 fixed paylines, all paying left to right across the 5×3 grid.
• What is the grid size of Crazy Gorilla Boom?

  Crazy Gorilla Boom runs on a 5×3 grid with 9 fixed paylines.
• Can you buy the bonus on Crazy Gorilla Boom?

  Yes. A BUY button sits in the base game, offering 10 Free Spins for 70x the bet or Banana Pull Bonus Game entry with the Hard Hat for 70x the bet.
• Who makes Crazy Gorilla Boom?

  Crazy Gorilla Boom is made by Spin Joy Games.
• How do you trigger Free Spins in Crazy Gorilla Boom?

  Landing three Scatters or more anywhere on the reels opens the round, which always awards 10 spins. It plays at the bet and lines of the triggering spin, with Chest symbols carrying multipliers that the Gorilla collects and adds to the win.
• How does the Banana Pull Bonus Game work?

  Three Bonus symbols on reels 1, 3 and 5 trigger it. Five ropes hang above the Gorilla and you pull them one at a time: bananas add cash prizes to a running total, while a Brick removes a life. Lose all your lives and the round ends, paying the total.
• What does the Hard Hat do in Crazy Gorilla Boom?

  The Hard Hat is an extra life in the Banana Pull Bonus Game. The first Brick knocks the hat off instead of ending the round. It comes as standard on Buy Feature, Bonus Booster and Combo Booster entries, but not on a standard trigger or a Free Spins Booster trigger, which both start with one life.
• How does the Gamble feature work in Crazy Gorilla Boom?

  After any winning spin you can guess red or black on a face-down card to double your winnings, with up to five consecutive gambles allowed. A wrong guess loses the originating win, and the feature isn’t available after a purchased feature.