3 Oaks Gaming expands its catalogue of feature-focused slots with Coin Volcano, a compact 3×3 release built around Hold and Win respins, persistent coins and volcanic multiplier events.
The title uses a limited reel layout rather than a conventional five-reel structure. Its main mechanics are concentrated across nine positions, making it possible to display coin values, special symbols and jackpot progress without a crowded interface.
Three qualifying symbols across the middle row activate the Bonus Game and award three respins. Bonus Coins remain locked during the feature, while new symbols can fill the empty positions.
The game includes a Sticky Coin that remains on the reels during the base mode until the bonus begins. This provides visible progress towards the Hold and Win round and connects the two stages of play.
During the bonus, players may encounter Collect Symbols, Mystery Symbols and fixed jackpot prizes. The Mini, Minor and Major Jackpots can appear through special symbols, while filling the complete grid may award the Grand Jackpot of up to 500× the total bet.
Volcano Multipliers provide another feature layer. An eruption can place multipliers across several grid positions, and the Ultra Bonus Game guarantees this event at the start.
For operators, Coin Volcano offers a slot with a recognisable Hold and Win structure and a compact presentation. Its primary mechanics can be understood directly from the reels, while the volcanic theme gives multiplier events a clear visual identity.
The title does not rely on a large symbol set or multiple secondary bonus games. Instead, it develops one central feature through locked coins, collection symbols, mystery reveals, multipliers and jackpots.
Coin Volcano therefore adds a concise, feature-first release to the 3 Oaks Gaming portfolio, combining familiar coin-respin mechanics with a distinctive volcanic presentation.
