Coin Volcano is a 2023 coin slot from Booongo, now 3 Oaks Gaming, played on a small 3x3 grid with no regular pay symbols at all. Everything revolves around coins, a Hold and Win feature, volcano multipliers and four fixed jackpots. The listed top prize is 2,551x your stake. It suits you if you like short, focused coin games, want a medium volatility option and like having a choice of two bonus buys.
How does Coin Volcano work?
The grid has three reels and three rows and no paylines. Spins in the base game are about landing special symbols: regular coins worth 1x to 4x your stake, jackpot coins, mystery symbols and collect symbols.
Sticky coins stay on the grid until a feature triggers and then carry into Hold and Win. Coin Collect symbols can appear at any time and pay out the coins on screen as an instant win. Volcano multipliers can land at random and multiply the values in play.
What are the Coin Volcano bonus features?
Three special symbols on the middle row start Hold and Win. You get three respins, and each new symbol that lands resets the count. The round ends when the respins run out or the grid is full. Jackpot coins pay 10x, 20x or 50x, and filling the whole grid awards the Grand jackpot of 500x.
An Ultra Bonus Game can also trigger without warning, with guaranteed volcano multipliers. Where bonus buys are allowed, you can buy Hold and Win for 30x your stake or the Ultra Bonus Game for 75x. There is no free spins round.
Is Coin Volcano worth playing? RTP and volatility explained
The listed RTP is 95.66%, a little below average. Booongo now trades as 3 Oaks Gaming, and its games may be offered in more than one RTP version. The help screen at your casino shows which one you are playing.
Volatility is rated medium and the cap is 2,551x, so this is a gentler game than many hold and win titles. The small grid means features come fairly often, but individual wins are usually modest unless a volcano multiplier lands on a busy screen.
3x3 coin games like this one are popular with players who want fast rounds and no paylines to track. Coin Volcano is part of a wider 3 Oaks coin range, and the games share similar rules, so it is worth comparing their RTP settings before you pick one.
Tips before you play Coin Volcano
- Check the RTP in the game rules before you start.
- Work out what a bonus buy costs at your stake before using it.
- Use the demo to see how often Hold and Win triggers.
- Do not expect free spins, since the game has none.
- Set a loss limit and stick to it.









