Series
Tropicool series
Tropicool's frozen-fruit niche
In the crowded cascade-slot market, the Tropicool series gives ELK Studios a distinct frozen-fruit lane, combining animal characters, icy symbols and large multiway grids with bonus access. Tropicool set the commercial position in 2021 on a 6x6 layout with 46,656 ways, cascading wins, sticky wilds and increasing multipliers, capped by a 10,000x maximum win.
Ranked by Slot Score
| Game | Year | RTP | Volatility | Slot Score |
|---|---|---|---|---|
 TropicoolELK Studios | 2021 | 95% | Medium volatility | 72 |
 Tropicool 2ELK Studios | 2023 | 94% | Medium/High | 76 |
 Tropicool 3ELK Studios | 2024 | 94% | High volatility | 76 |
 Tropicool 4ELK Studios | 2025 | 94% | High volatility | 77 |
 Tropicool 5LatestELK Studios | 2025 | 94% | High volatility | 62 |
The Tropicool engine
- Large grid: six reels and multiway evaluation replace conventional paylines.
- Continuing wins: cascades or avalanches clear space for another result within the same sequence.
- Oversized disruption: colossal reels, 3x3 mega symbols or expanding symbols change a large part of the grid at once.
- Direct feature access: bonus-buy or bonus-bet options sit alongside free-spin triggers in much of the series.
- Visual signature: chilled fruit and animals turn a tropical theme into a deliberate hot-and-cold contrast.
Tropicool 2 expanded the formula in 2023 without changing the 6x6 and 46,656-way base. Mega symbols, mystery symbols and a free-spins multiplier helped lift the maximum win to 25,000x. The 2024 Tropicool 3 stretches the grid to 6x8 and moves to high volatility, replacing some of the sticky-wild emphasis with wild multipliers, random multipliers and mystery-symbol behavior.
The fourth and fifth entries bring the action back to 6x6 while changing how symbols persist. Tropicool 4 adds walking wilds, respins, expanding symbols and an expanding wild with a respin, retaining the 25,000x ceiling. Tropicool 5 keeps high volatility and the mega-symbol, mystery-symbol and expanding-symbol toolkit, but its documented feature set puts renewed emphasis on the prize line and bonus bet.
How each release redirects the grid
- Tropicool: the 6x6 cascade base with sticky wilds and a 10,000x ceiling.
- Tropicool 2: mega and mystery symbols raise the ceiling to 25,000x.
- Tropicool 3: a taller 6x8 grid shifts the series toward wild and random multipliers.
- Tropicool 4: walking and expanding wilds introduce more positional persistence.
- Tropicool 5: returns attention to expanding symbols, mega symbols and the prize-line structure.
Tropicool holds its niche by keeping the same recognizable frozen-fruit world while repeatedly changing the device that controls a cascade. The useful comparison is therefore not visual but mechanical: sticky wilds in the original, oversized mystery effects in the middle releases, then mobile and expanding symbols in the later games.