Bonus Digger links two very different bonus structures to its underground theme. Three Wilds in a specified set of reels award a long free-game round with a three-times win multiplier, while Scatters launch a pick-and-dig game where a mole can collect treasure chests until dynamite ends the round.
Bonus Digger at a glance
| Provider | Skywind Group |
|---|---|
| Genre / theme | Animals, Mining |
| Game type | Video slot |
| Reels / grid | 3×5 |
| Reference RTP | 95.17% |
| Volatility | 4/5 |
| Payout mechanic | 20 lines |
| Release date | 9 August 2018 |
| Main features | Free Games Feature; Digger Bonus Game |
RTP and stake limits can vary by version and market. Check the information screen in the game you open. Maximum win is a ceiling, not an expected result.
A 20-line base game
The official listing gives a 3×5 layout and 20 Ways/Lines; its description calls these 20 lines. The ordinary symbol paytable is not contained in the recorded feature rules, so no specific line prize or Wild substitution outside the stated features should be assumed.
The layout and line count set the context, but they do not establish the probability of either trigger. Three matching Wild positions make the Free Games condition easy to describe precisely. The Scatter condition is broader in location, yet the record only specifies three, four or five Scatters as the Digger trigger during either the main game or Free Games.
Multiplier spins and the digger’s risk
In the main game, three Wilds landing on reels 2, 3 and 4 award 15 Free Games. The same three-reel Wild pattern during Free Games retriggers the same number—15 more games—and the rules say retriggers can continue indefinitely. All wins in Free Games are multiplied by three, with one explicit exception: wins from the Digger Bonus Game during Free Games are not multiplied.
Digger Bonus can start when three, four or five Scatters appear anywhere on the reels, in either the main game or Free Games. The player picks a mound for the mole to dig. The mole can collect up to six treasure chests, and every chest awards a cash prize. Finding the dynamite chest ends the bonus game.
These features interact through entry conditions and payout treatment, not through an invented chain where one bonus guarantees the other. A Scatter during Free Games can launch the digger round, but that round’s cash prizes remain outside the three-times Free Games multiplier. Separately, a Wild pattern can retrigger Free Games indefinitely. The exception for Digger Bonus wins is especially important in evaluating the free-game multiplier. If Scatters start the mole round during Free Games, those cash prizes are not multiplied by three, even though ordinary wins in that round are. The text does not explain whether the 15-game Free Games counter advances during mound picks or how the Digger Bonus concludes relative to that counter, so neither pause nor consumption should be presumed. Indefinite retriggers describe the Wild condition only; they do not establish unlimited digger picks or a total bonus payout.
Settings and what the rules leave open
The first listed RTP option is 95.17%; multiple options are available on the official page and operators may select another. Volatility is 4/5, the layout is 3×5, and the combined Ways/Lines field is 20. The release date is 9 August 2018. No exact maximum win is recorded.
Bonus Digger’s best documented qualities are the exact retrigger pattern and explicit x3 exception. Its unresolved areas are the underlying prize table, chest values, dynamite frequency and maximum payout. Those absences keep the feature descriptions useful while limiting comparisons based on expected return or total upside.
Strengths and weak points
Strengths
The 15-game award, exact three-reel retrigger pattern, x3 multiplier and explicit Digger Bonus exception make the Free Games accounting unusually clear.
Weaknesses
The mound game leaves chest values, dynamite frequency and pick outcomes undefined, while the rules do not disclose a maximum win or the ordinary symbol paytable.
Our Editor’s View
Bonus Digger has a strong mechanical contrast: a carefully positioned Wild pattern creates 15 multiplied Free Games, while a Scatter-triggered mole bonus asks the player to pick through a sequence that can end at dynamite. The rules are especially useful where they mark a boundary—the digger’s cash prizes do not receive the Free Games x3 multiplier—and where they permit indefinite retriggers from the same three-reel Wild pattern.
