Thunder Coins XXL: Booster Cells by Playson combines classic fruit symbols, lightning and gold coins on a narrow, tall reel field. Three reels and five rows carry ordinary line wins, while the coin action gives individual positions another role. Collected amounts can remain stored on cells, ready to increase a later coin that lands there.
Quick take: The position beneath a coin can matter as much as the value printed on it.
Theme and Gameplay
Ordinary combinations pay consecutively from left to right across fifteen fixed paylines, with only the highest award on each line paid. The 777 Wild substitutes for regular symbols, while Coins and Thunder Coins have their own collection roles.
A Thunder Coin appearing with Coins collects their values into the spin win. That creates two useful readings of a stop: the fruit and Wild combinations explain the line awards, while the collector explains what happens to the cash symbols. A screen containing several coins becomes more interesting when there is a Thunder Coin to gather them.
Slot Features
Booster Cells give collected prizes a continuing influence. Their values remain stored on the relevant cells. When another coin lands on one of those positions, it adds the stored amount to its own value and updates the cell. The location has therefore become part of the prize calculation, rather than merely a place for the next symbol to stop.
Thunder Coins can also randomly boost several stored amounts. These increases make it useful to follow the developing cell values alongside the newly arriving coins: a familiar position may carry a larger contribution by the next collection.
The bonus begins with three respins, replenished by new symbols. Thunder Coins lock on the middle reel, and their accumulated values contribute to the final award when the respins expire. The locked collectors provide a stable point to watch while the remaining action develops around them. A bonus-purchase option also offers direct entry.
Feature focus: When a coin lands on a valued cell, read its new combined amount; the stored contribution can make that landing more useful than its starting value suggests.
RTP and Win Potential
The prize progression comes from addition and collection. A later coin inherits the amount stored beneath it, while Thunder boosts can increase several stored values. The important comparison is between a coin's own value and the larger amount created by its position, followed by what the collector gathers.
My Thoughts On This Slot
Giving the cells a memory is a good fit for this coin format. It makes positions worth watching after a collection has finished, and gives returning coins a reason to feel different from their earlier appearances.
There is more bookkeeping here than in a plain fruit game. Someone wanting to read only the current symbols may find the stored amounts distracting. The appeal is stronger for someone who enjoys following a prize board as its values develop, with familiar line combinations providing the ordinary-spin foundation.
Final Take: A fruit-and-coin game whose most interesting detail sits underneath the next landing.
