Set amongst the trees is the 6×5 grid, featuring a vibrant cast of jungle animal symbols, including gorillas, tigers, parrots and elephants. Winning combinations are formed by landing at least eight matching symbols anywhere on the reels, while winning symbols disappear to make way for new ones, triggering the tumble mechanic.
At the heart of the game is the dynamic Coin Stack Collector feature. At the start of any base game round, collector positions can be randomly applied across the grid.
When a coin stack lands on a collector position, its value is immediately collected and new symbols cascade into place. If additional instant cash prizes tumble into the same collector position, their values are also collected, allowing the feature to chain together multiple wins in a single round until no more coin values remain on screen.
When four or more scatter symbols land anywhere on the reels, players are awarded 10 free games, with the chance to earn five additional free games whenever four or more scatters appear during the bonus round. Throughout free games, any seeded collector symbols remain locked in place, enhancing win potential.
During the free games feature, coin stacks can also include multiplier symbols, which increase the Coin Stack Multiplier by 1x each time they are collected. This multiplier does not reset between spins and remains active for the entirety of the free spins round. Coin stack values range from 0.25x to 1.5x the bet, while high-value coin stacks can award between 5x and 100x the total bet.
Once no more coins can be gathered, the accumulated coin stack total is multiplied by the final multiplier value.
Richard Ganster, Director of Games Strategy and Games Portfolio Management at Greentube, said: “Gorilla Cash™ is designed to deliver constant momentum, with tumbling reels, collector mechanics and escalating multipliers keeping players engaged from start to finish.
“The jungle theme pairs perfectly with the game’s dynamic features, creating a wild and rewarding slot experience.”
Industry Perspective
Greentube’s Gorilla Cash™ reflects the ongoing industry trend toward pays-anywhere mechanics and collector features, building on the success of similar hold-and-collect style games that have gained traction across European markets. The combination of tumbling reels with persistent collector positions addresses operator demand for high-engagement slot content with extended session potential.
The implementation of non-resetting multipliers during free games represents a strategic design choice aimed at creating climactic win potential, a mechanic proven to drive player retention in the competitive online casino vertical. For NOVOMATIC’s digital division, this release reinforces Greentube’s position in the feature-rich video slot segment, where differentiated math models and bonus structures remain critical to content performance across regulated jurisdictions.
