📖 Detailed Explanation
The Bonus Game in Coin Volcano Slot by 3 Oaks Gaming is a Hold & Win feature triggered by landing three Bonus symbols (volcano icons) on the middle reel or row of the 3x3 grid.
Upon activation, the grid locks, symbols become sticky, and the player receives 3 initial respins. Coin symbols appear, each valued at 5x to 9x the bet, and remain locked in position, accumulating towards the total win. Every new coin, jackpot, or special symbol that lands resets the respin counter to 3, continuing until no new symbols land or the entire grid fills (awarding the Grand Jackpot, up to 500x the bet).
- Jackpots: Mini (10x bet), Minor (20x), Major (50x), Grand (500x). Collecting three identical jackpot symbols pays the corresponding prize.
- Mystery Symbols: Transform into jackpots (Mini/Minor/Major) or other symbols at round's end.
- Volcano Multipliers: Trigger randomly on coin appearances, applying 2x to 5x (or up to 9x) to the total bonus win; can activate multiple times.
- Ultra Bonus: Grants +3 respins when three additional Bonus symbols land; may feature more multipliers.
Special symbols like Sticky Coins (red-centered, 5x-9x) stay locked throughout. The round ends when respins exhaust without new symbols or the grid is full. A Buy Bonus option allows direct entry for 60x (Bonus) or 150x (Ultra Bonus) the bet. All payouts occur exclusively in this mode, emphasizing high-volatility thrills with RTP around 96.5%.