3 Coin Volcanoes Demo Slot by Booongo Free Play

3 Coin Volcanoes is an online Slot from Booongo.

Quick Facts

- Layout: 4 reels x 3 rows

- Paylines: 3 fixed

- Key mechanics: Hold and Win Bonus, Volcano Boosters, Sticky Coins, Mystery Symbols

- Special symbols: Gold Coins, Sticky Coins, Mystery Jackpot symbols, Boost (Collect) symbol

How the Game Plays

3 Coin Volcanoes is a non-traditional slot from 3 Oaks Gaming (formerly Booongo) that focuses entirely on bonus triggers rather than standard base game payouts. Set against a backdrop of molten lava and glowing volcanic peaks, the game features a unique 4x3 grid. Winning combinations do not pay cash directly; instead, landing four symbols on an active payline triggers the primary bonus round. Players can choose to activate one, two, or three horizontal lines to increase the frequency of bonus entries.

Hold and Win Bonus Explained

The core of the experience is the Hit the Bonus minigame, a Hold and Win style round that begins with three respins. Only bonus symbols and special modifiers appear during this feature, with each new symbol resetting the respin counter. Sticky Coins can appear in the base game and persist until the bonus is triggered, potentially carrying values up to 9x the wager into the round.

Volcano Boosters and Jackpots

Three colored volcanoes sit above the reels, each representing a distinct modifier that can activate during the bonus. The Life Volcano (green) grants a guaranteed respin refill, the Multi Volcano (red) adds random multipliers to the grid, and the Grow Volcano (blue) expands the layout to 4x5. Filling all positions on the expanded grid awards the Royal Jackpot worth 2,000x, while other fixed jackpots like the Grand (500x), Major (50x), Minor (20x), and Mini (10x) can be won through specific symbols or screen clears.

Click the Play for Free button to load the 3 Coin Volcanoes demo, test its features and payouts and decide if it is a game you enjoy.