Coin UP Volcano slot, the fact sheet
The editorial read sits on the Coin UP Volcano hub ; this page is the inventory. Everything below is visible in the game itself, so each line can be checked against your own lobby.
Specification
| Features | Coin UP Volcano |
|---|---|
| Provider | 3 Oaks Gaming |
| Release date | August 6, 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
Base board (4x3). Four reels, three rows, one to three selectable lines, and a BONUS UP strip padlocked above the reels. The five jackpot values are displayed across the top throughout.
Bonus board (4x6). Twenty-four cells. The bottom three rows are active immediately; the top three start sealed. A vertical GRAND marker runs down each flank of the lower block, and a counter reads progress 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 10x, 20x or 50x the line bet |
| Mystery | Base and bonus | Resolves into a cash value |
| Mystery Jackpot | Bonus | Resolves into one of the fixed tiers |
| Coin Collect | Bonus | Sweeps the values of every active coin 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 multipliers 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 at once.
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: for covering the bottom three rows of the bonus board.
- Royal 1,000x: for unlocking and filling all twenty-four cells. A full board covers the lower rows too, 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 an ergonomic choice. 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 print large, multipliers sit in small tags, and the ladder stays fixed at the top.
The element worth watching is the UP row: a locked ribbon behind four padlocks in base play, the busiest part of the screen inside the bonus.
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 operator installs. Open the info panel in your own lobby; that build governs your session. The RTP page shows how to turn whatever figure you find into a cost per thousand spins.
Round mechanics in sequence: how the game works . Stake sizing: play guide . Free trial: demo .
21+ where online casinos are licensed. Read the paytable before the first spin and set a budget before the second. 1-800-GAMBLER.