Coin Volcano 2 review: the sequel's trade-off
Coin Volcano 2 (3 Oaks Gaming, 7 August 2025) makes one deal with the player and everything on this page follows from it: the grid grows from 3x3 to 3x5, an Ultra Bonus and a fifth jackpot tier arrive — and the advertised ceiling drops from the original’s 2,551x to 500x. Whether that deal suits you depends on which you play for: frequency of bonus texture, or the size of the rare peak. This is not a better or worse Coin Volcano ; it is a different wager on the same mechanic.
Specification
| Features | Coin Volcano 2 |
|---|---|
| Provider | 3 Oaks Gaming |
| Release date | 7 August 2025 |
| Layout | 3x5 |
| Paylines | 1 |
| RTP | 95.66% |
| Volatility | Medium to high |
| Bet range | $0.10 – $70 |
| Max win | 500x |
| Jackpots | 5 tiers incl. Grand 500x (may vary by casino version) |
| Features | Hold and Win, Sticky Coins, Jackpot Coins, Mystery Symbols, Volcano Multipliers, Multiplier cells, Ultra Bonus, Bonus Buy |
| Free spins | No |
| Demo | Yes |
| Mobile | Android / iOS |
Note the last mode line: internationally the sequel sells a Boost Bonus Game through Bonus Buy (up to 300x the stake). UKGC-licensed slots may not offer feature-buy at all, so British players get exactly two modes — the standard bonus and the randomly-triggered Ultra Bonus — and lose nothing they could legally have had.
Original vs sequel in one look
| Criterion | Coin Volcano | Coin Volcano 2 |
|---|---|---|
| Grid | 3x3, 1 line | 3x5 |
| Advertised cap | 2,551x | 500x |
| Bonus positions to fill | 9 | 15 |
| Jackpot tiers | 4 | 5 |
| Multiplier behaviour | Random eruptions | Guaranteed upgrades in Ultra Bonus |
| Session texture | Short, decisive rounds | Longer, incremental rounds |
Fifteen positions take longer to fill than nine, which is the sequel’s real personality: the bonus round becomes a gradual build rather than a quick resolution, with more Mystery symbols and multiplier cells in play per round. Filling everything pays the 500x Grand on top of the collected coins.
Before you stake
Run both demos back to back — Coin Volcano 2 demo , then the original’s — and notice which kind of dead stretch annoys you less; that answers the choice better than any table. Then read the UK bet-sizing guide , check operators against the casino checklist , and see player reviews for how sessions actually ran. Android access is covered on the Android APK page . If you want the sequel as a specification rather than a verdict, the fact sheet itemises it and how the game works runs the round in order.
Two follow-ups are worth the click. The app page separates the licensed operator apps that actually carry the sequel from the browser routes that install nothing and reverse in a second. The RTP page shows why the multiplier cells leave the house edge exactly where it was and what that works out to across a thousand spins.
18+. UK play is capped at £5 per spin (£2 at 18-24) with no credit cards accepted. BeGambleAware.org offers free support; GAMSTOP covers self-exclusion.