Coin Volcano
Coin Volcano Bonus: Coin Volcano vs Coin Volcano 2 Bonus Comparison
Coin Volcano or Coin Volcano 2: Which Bonus Game Should You Choose?
The original Coin Volcano is easier for getting to know the series mechanics: its compact bonus grid and two main modes make it quicker to understand respins, jackpots, and position multipliers.
Coin Volcano 2 uses an expanded 3×5 grid and adds the Boost Bonus Game. This version suits players who want longer rounds and more interactions between bonus symbols and multipliers.
| What matters to the player | Recommended version |
|---|---|
| Simpler bonus structure | Coin Volcano |
| Expanded 3×5 grid | Coin Volcano 2 |
| Boost Bonus Game | Coin Volcano 2 |
| First introduction to the series | Coin Volcano |
| More bonus modifiers | Coin Volcano 2 |
What Does Coin Volcano Bonus Mean?
When searching for Coin Volcano Bonus, users may mean two different things: the in-slot bonus game or a casino welcome bonus. These offers work independently of each other.
Slot Bonus Feature
Coin Volcano Bonus usually refers to a Hold & Win bonus round. To trigger it, three qualifying bonus symbols must appear on the central line.
After activation, the symbols move to the bonus grid and the player receives three respins. A new bonus symbol resets the counter to three. The exact grid size, available modes, and multiplier mechanics differ between Coin Volcano and Coin Volcano 2.
Casino Bonus
Coin Volcano does not provide a separate welcome bonus. Promotions are offered by the casino or operator where the user launches the game.
You can visit a partner site and review offers such as a welcome bonus, deposit bonus, free spins, or cashback.
The bonus amount, minimum deposit, wagering requirements, validity period, and list of eligible games are set by the individual casino. The slot provider does not determine the terms of the operator’s welcome promotion.
Coin Volcano Bonus Features
Bonus Game
The game’s basic bonus round is activated when the middle line is filled with three coins or coins + Mystery symbols
This bonus type gives players a chance to compete for a jackpot. During the Bonus Game, regular coins, Sticky Coins, Mystery Symbols, Mystery Jackpot, Coin Collect, and fixed jackpots may appear. Volcano Multipliers additionally boost prizes on individual positions.
If you want to activate this bonus through the “Bonus Purchase” feature, the cost is 30x the bet amount; for example, with a base bet of 10 rubles, activating the bonus through purchase will cost 300 rubles.
The bonus round uses a 3x3 grid where, in addition to the coins that appeared during activation, other coins may land, as well as Mystery symbols, collection symbols, and multiplier coins.
The Bonus Game starts with three respins. Each new bonus symbol that appears in an empty position resets the counter to three. The round ends when the respins run out or when bonus symbols fill all nine positions.
Filling the entire grid awards the Grand Jackpot worth 500× the bet. It is added to the value of the other symbols collected during the bonus game.
Ultra Bonus Game
Ultra Bonus uses the same Hold & Win rules as the standard Bonus Game: the round starts with three respins, and every new bonus symbol resets the counter to three.
The main difference is the guaranteed appearance of Volcano Multipliers during the bonus game. This allows prizes on individual positions to receive additional multipliers.
Ultra Bonus may activate randomly or through Bonus Buy for 75× the bet, provided the feature is available from the selected operator and permitted in the user’s country.
Sticky Coins
Sticky Coins are coins that can lock onto the bonus grid before the Bonus Game begins. Unlike regular symbols, they retain their position and carry over into the next bonus round.
As a result, the Bonus Game may start with more than three occupied positions. The value of each Sticky Coin is counted when the bonus game ends and may be increased by a position multiplier.
Mystery Symbols
What are Mystery symbols in Coin Volcano? There are two types of symbols: Mystery and Mystery Jackpot.
Mystery
After the Bonus Game ends, the Mystery symbol reveals one of the available special symbols. It may be a regular coin or Sticky Coin, a jackpot symbol, or Coin Collect, depending on the paytable of the specific game version.
Coin Collect adds together the values of the visible prize and jackpot symbols on the bonus grid.
Mystery Jackpot
After the bonus game ends, the Mystery Jackpot symbol reveals one of three fixed jackpots: Mini, Minor, or Major. The Grand Jackpot is triggered separately by filling every position on the bonus grid.
Volcano Multipliers
During the Bonus Game, the volcano may erupt and add multipliers to one or more positions on the bonus grid. A prize symbol located on an upgraded position receives the corresponding multiplier when the win is calculated.
A single position may receive several upgrades during the bonus round. The exact multiplier range depends on the mechanics of the selected mode.
Jackpots
Coin Volcano uses four fixed jackpots: Mini, Minor, Major, and Grand. Their values are calculated relative to the current bet.
Grand
The Grand Jackpot pays 500× the bet and is triggered by filling all nine positions on the bonus grid.
Major
Major pays 50× the bet. With a bet of 100 rubles, the symbol’s base value would be 5,000 rubles. If the symbol is located on a multiplier position, its final value increases according to the accumulated modifier.
Minor
Minor has a base value of 20× the bet and may also be boosted by a position multiplier.
Mini
Mini is the smallest fixed jackpot, worth 10× the bet.
Mini
The minimum jackpot symbol is worth 10x the bet amount and appears quite often.
Coin Volcano 2 Bonus Features
Unlike the original game, Coin Volcano 2 offers more bonus features and multipliers, which are covered below.
Bonus Game
The Bonus Game is triggered when three qualifying bonus symbols appear on the highlighted central line. All locked symbols on the grid at the time of activation carry over into the bonus round.
The bonus takes place on a 3×5 grid and starts with three respins. If a new bonus symbol appears in an empty position, the counter resets to three. The round ends after the respins run out or all 15 positions are filled.
During the Bonus Game, regular coins, Sticky Coins, Mystery Symbols, Mystery Jackpot, Coin Collect, and jackpot symbols may appear. The volcano may also improve multipliers on individual positions.
The standard Bonus Game can be purchased for 50× the bet if Bonus Buy is available from the operator and permitted in the current GEO.
Ultra Bonus
Ultra Bonus uses the same basic rules as the regular Bonus Game but starts with a guaranteed upgrade to the position multipliers. In addition, volcanic eruptions occur more frequently during this mode.
The remaining symbols, jackpots, and round-ending conditions stay the same as in the standard Bonus Game.
When using Bonus Buy, Ultra Bonus costs 100× the bet.
Boost Bonus Game
Boost Bonus Game is an additional Coin Volcano 2 mode available through Bonus Buy for 300× the bet. It is based on the Ultra Bonus mechanics, but each eruption increases the multiplier of the selected position by +5 instead of the standard +1. The mode is based on the Ultra Bonus mechanics, but each eruption upgrade increases the multiplier of the selected position by +5 instead of the standard +1. This makes it possible to accumulate high position multipliers more quickly, although it does not guarantee a full grid or a specific win amount.
Volcano Multipliers
During the Bonus Game, the volcano may erupt and increase the multiplier of one or more positions on the bonus grid. If a prize symbol is already on an upgraded position or lands there later, its value is multiplied by that position’s accumulated multiplier. A single position may receive several consecutive upgrades.
Additional Symbols and Modifiers
The 3×5 grid provides more positions for bonus symbols and may make the round potentially longer. However, a larger grid does not itself mean a higher chance of winning: the result depends on the game’s mathematical model.
Coin Volcano vs Coin Volcano 2: Bonus Comparison
| Parameter | Coin Volcano | Coin Volcano 2 |
|---|---|---|
| Main bonus game | Available | Available |
| Ultra Bonus | Available | Available |
| Sticky Coins | Yes | Yes |
| Mystery Symbols | Yes | Yes |
| Volcano Multipliers | Yes | Yes |
| Boost Bonus Game | No | Yes |
| Fixed jackpots | Yes (based on the bet) | Yes (based on the bet) |
| Grand Jackpot | 500× the bet | 500× the bet |
| Maximum game win | Up to 2,551x the bet | Up to 5,000× the bet |
| Grid size | Compact 3×3 | Expanded 3×5 |
| Trigger condition | Three bonus symbols on the central line | Three bonus symbols on the highlighted central line |
| Bonus Buy | 30× / 75× | 50× / 100× / 300× |
| Bonus structure | Basic | Expanded |
| Best choice | First introduction to the series | More modes and modifiers |
The main difference between the games is not the jackpots but the size of the bonus grid and the number of available modes. Coin Volcano keeps a compact 3×3 structure, while Coin Volcano 2 uses a 3×5 grid and adds the Boost Bonus Game.
Which Version Is Better?
Coin Volcano is suitable if you:
- are discovering the series for the first time;
- prefer a compact bonus grid;
- want to understand Sticky Coins, Mystery Symbols, and jackpots more quickly;
- do not need the additional Boost Bonus Game.
Coin Volcano 2 is suitable if you:
- are already familiar with the original game;
- prefer the expanded 3×5 grid;
- want to try the Boost Bonus Game;
- are interested in accumulating position multipliers;
- are ready for a more complex bonus-round structure.
Coin Volcano 2 offers more mechanics, but this does not mean a higher guaranteed return or more frequent wins. The choice depends on player preferences rather than a promise of better results.
Casino Bonuses for Coin Volcano
A casino welcome bonus is not part of the Coin Volcano mechanics. Its amount, wagering requirements, minimum deposit, and availability for a specific game are set by the operator.
Before activating an offer, check whether Coin Volcano contributes toward wagering requirements, whether Bonus Buy is allowed, and what maximum bet applies when using bonus funds.
