Coin UP Volcano slot, the fact sheet
The review sits on the Coin UP Volcano hub ; this page is the inventory. Everything below is visible in the game itself, on the reels, in the bet panel, or on the shop screen, so each line can be checked against your own lobby rather than taken on trust.
Specification
| Features | Coin UP Volcano |
|---|---|
| Provider | 3 Oaks Gaming |
| Release date | 6 August 2026 |
| Layout | 4x3 (extends in bonus) |
| Paylines | 1-3 |
| RTP | see your casino's paytable |
| Max win | see your casino's paytable |
| Jackpots | Mini 10x, Minor 20x, Major 50x, Grand 500x, Royal 1,000x |
| Features | Hold and Win, Row unlocking, Coin Collect, Mystery Symbols, Mystery Jackpot, UP modifiers, Super UP modifiers, Extra Life, Bonus Buy |
| Free spins | No |
| Demo | Yes |
| Mobile | Android / iOS |
The two boards
The game runs on two different grids, and almost every question about it resolves to which one you are looking at.
Base board (4x3). Four reels, three rows, one to three selectable lines, and a BONUS UP strip sitting padlocked above the reels. The five jackpot values are displayed across the top throughout, so the ladder is visible before you ever trigger anything.
Bonus board (4x6). Twenty-four cells. The bottom three rows are active immediately; the top three start sealed and open as the round unlocks them. A vertical GRAND marker runs down each flank of the lower block, and a counter beside the reels reads progress towards the full board as x/24.
The symbol set
| Symbol | Where it appears | What it does |
|---|---|---|
| Cash coin | Base and bonus | Carries a fixed cash value; collected at settlement |
| Bonus coin (Mini / Minor / Major) | Bonus | Carries a fixed jackpot value, 10x, 20x or 50x the line bet |
| Mystery | Base and bonus | Resolves into a cash value on reveal |
| Mystery Jackpot | Bonus | Resolves into one of the fixed jackpot tiers |
| Coin Collect | Bonus | Sweeps the values of every active bonus symbol on the board |
| REEL UP / Super REEL UP | UP row | Unlocks blocked cells on one reel, or on all four |
| MYSTERY UP / Super MYSTERY UP | UP row | Turns mystery symbols into guaranteed jackpots |
| MULTI UP / Super MULTI UP | UP row | Applies a multiplier to coin values |
| COIN UP / Super COIN UP | UP row | Raises the cash values already on the board |
| Extra Life | Bonus | Restores a respin to a round that has run out |
The four UP modifiers come in ordinary and SUPER forms. The ordinary version acts on the single reel it lands above; the SUPER version applies the same effect across all four reels at once. That is the whole distinction, and it is the one worth watching during a round.
The jackpot ladder
Mini 10x, Minor 20x, Major 50x, Grand 500x, Royal 1,000x, five fixed tiers, all quoted against the line bet rather than the total spin. The three lower tiers arrive as tagged coins during the bonus. The two upper tiers are structural:
- Grand 500x: awarded for covering the bottom three rows of the bonus board.
- Royal 1,000x: awarded for unlocking and filling all twenty-four cells. A full board covers the lower three rows as well, so the Royal settles together with the Grand: 1,500x the line bet in one payout.
Design notes
The presentation is unusually plain for a modern Hold and Win, and that is a deliberate ergonomic choice rather than an economy. A purple base-game field switches to saturated lava red the moment the bonus starts, which makes the state of the round readable at a glance. Coin denominations are printed large on the faces, multipliers sit in small tags at the coin’s upper right, and the jackpot ladder stays fixed at the top of the screen throughout.
The one element that repays attention is the UP row. In base play it is a locked ribbon reading BONUS UP behind four padlocks; in the bonus it becomes the busiest part of the screen, and the difference between a MULTI UP and a Super MULTI UP tile is a small colour shift on a small tile.
Where the numbers come from
3 Oaks publishes the mechanics and leaves the numeric profile, return, volatility, maximum win, stake range, to the certified build each casino installs. Open the info panel in your own lobby and read the figures there; that build is the one governing your session. The RTP page shows how to turn whatever number you find into a cost per thousand spins.
Round mechanics in sequence are on how the game works , stake sizing on the play guide , and the free demo puts the whole symbol set in front of you at no cost.
18+. Read the paytable before the first spin and set a budget before the second. UKGC-licensed operators only. BeGambleAware.org, with GAMSTOP for self-exclusion.