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Coin Volcano is a compact slot from 3 Oaks Gaming that drops regular pay symbols altogether and lets coins carry the whole game. Released in August 2023, it sits on a 3x3 grid with no paylines to speak of, which makes it a unique entry in a crowded Hold and Win genre. This review covers the original, and the latest entry, Coin Volcano 2, is covered at the end for anyone who wants the newer version. The theme is thin, just a volcano beside the grid, and it plays on iOS and Android. The math is modest. RTP is listed at 95.66%, volatility is medium, and bets run from 0.10 to 60 per spin. The top prize is 2,551x the stake. Everything on the board is a coin or a mystery symbol, and mystery symbols turn into other symbols. Three special symbols on the middle row start the Hold and Win round. Sticky coins carry over into it, three respins reset every time a symbol lands, and regular coins pay 1x to 4x the bet. The bonus structure is where the volcano earns its name. Jackpot coins pay 10x, 20x and 50x, and filling the whole board awards the 500x Grand jackpot. Volcano multipliers and Coin Collect instant wins can appear at random, and an Ultra Bonus game can trigger at random with multipliers guaranteed. There are no classic free spins. If you would rather skip the wait, bonus buy offers Hold and Win at 30x and the Ultra Bonus game at 75x, subject to casino and region. Coin Volcano 2 arrived in 2025 and swaps the 3x3 layout for a 3x5 grid with 15 positions. One review credits it with a 5,000x top win, roughly double the original, and a bonus buy ladder of 50x, 100x and 300x outside the UK. RTP figures for the sequel vary by source, so check the in-game info. Before you play Coin Volcano for real at an online casino, try the demo. Age limits are 18+ in most markets and 21+ in some, and play only what you can afford to lose.
Contact info
77 Bd Saint-Jacques, 75014 Paris, France, Paris, France
- support@coinvolcano.info
- coinvolcano.info
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