About the Game
- Grid Boosters. Collect winning symbols to unlock powerful Grid Boosters!
- Bonus Game. Collect at least 8 winning symbols in a single bonus game spin to receive an extra spin!
- Maximum Win. Win up to 12,000x!
Doctor Dust is a 5×5 cascading cluster game from Bullshark Games and Hacksaw Gaming, set in a post-apocalyptic wasteland where wins are formed by 4 or more matching symbols. A mysterious plague doctor explores the ruins, collecting components that unlock powerful Grid Boosters, each of which alters the grid in its own way.
The symbol payouts listed above reflect the current bet level. The theoretical return to player (RTP) for this game is 96.3%. The RTP was calculated using a simulation of 10,000,000,000 spins.
Buy Bonus
The RTP for purchasing BONUSHUNT FEATURESPINS™ is 96.3%. For full details on this feature, please see the section above. Each spin triggers the Bonus Game 3 times more often. Winning symbols start collecting at 4. Volatility: Extreme.
The RTP for purchasing DUST RAID FEATURESPINS™ is 96.32%. For full details on this feature, please see the section above. Winning symbols start collecting at 8. At least one Grid Booster is guaranteed. Volatility: Extreme.
The RTP for purchasing SURFACE SEARCH is 96.31%. For full details on this feature, please see the section above. Collect at least 8 winning symbols during a single bonus game spin to receive an additional spin! Volatility: Extreme.
The RTP for purchasing TOXIC VAULT is 96.33%. For full details on this feature, please see the section above. Collect at least 8 winning symbols during a single bonus game spin to receive an additional spin! A second spin is guaranteed when all four Grid Boosters are present. Volatility: Extreme.
Max Win
Maximum wins can be achieved in all game modes. The maximum win in Doctor Dust is 12,000 times the current bet level. The maximum win can be achieved by activating certain combinations and/or features.
Step into the wasteland and help the Doctor survive by collecting resources.
Trigger the bonus game for a series of unlimited spins, where each spin is accompanied by at least one Grid Booster, and the feature continues as long as at least 8 winning symbols are collected in a spin.
With a grim wasteland theme, deeply interactive Grid Boosters, and a maximum win of up to 12,000 times the bet, “Doctor Dust” offers an intense gaming experience across all modes.
Collect components and master the ruins.
Game Rules
Collecting Winning Symbols
Next to the grid is a collection bar with 5 segments. Complete each segment of 8 symbols to unlock a random Grid Booster:
- Complete 1 segment to receive the 1st Grid Booster.
- Complete 2 segments to receive the 2nd Grid Booster.
- Complete 3 segments to receive the 3rd Grid Booster.
- Complete 4 segments to receive the 4th Grid Booster.
Grid Boosters are awarded randomly, and each Grid Booster can only be earned once per spin.
When all 5 segments are filled (40 symbols collected) in a single spin, the bonus game is triggered.
The collection continues after 40 symbols. Every additional 8 symbols earned increases the number in the center of the meter by +1, up to a maximum of 4. This number indicates how many segments of the meter will be pre-filled at the start of the bonus game. After reaching 4 in the center, no more symbols are collected.
The symbol collection resets with each new spin in the main game.
Grid Boosters
Four different Grid Boosters can be unlocked by collecting winning symbols.
All Grid Boosters are activated sequentially after the grid stabilizes, with the grid cascading and stabilizing again after each individual Grid Booster trigger.
Clone
Clones one random row into one or two adjacent rows.
Wild symbols on the overwritten rows are not replaced; they remain in place.
Cell multipliers on the cloned row are also copied to the target row. If the target row already contains multipliers, the values are summed.
Switch
Randomly selects 1-3 rows and transforms each symbol in these rows into the first symbol of the corresponding row.
Wild symbols in the rows remain Wild symbols.
Cell multipliers remain locked to their cells; only the symbols change.
Wilds
Adds 2-5 Wild symbols to random positions on the grid.
Wild symbols can be regular Wild symbols or contain multipliers.
Possible values: 2x, 3x, 4x, 5x, 10x, 15x, 20x, 25x, 50x, 100x.
Multipliers on Wild symbols are applied as cell multipliers to the grid positions they land on.
If a Wild with a multiplier lands on a cell that already has a multiplier, the values are summed.
Power Line
Removes all symbols from one random row and one random column, then fills the empty cells with new random symbols (excluding Wild symbols).
Wild symbols in the affected row or column remain in place and are not removed.
Each cell in the row and column receives a random multiplier.
Possible values: 2x, 3x, 4x, 5x, 10x, 15x, 20x, 25x, 50x, 100x.
The cell at the intersection of the row and column receives two new multiplier values, which are summed.
If the cell already has a multiplier, the new value is added to the existing one.
Cell Multipliers
Cell multipliers are linked to individual cells on the grid.
Cell multipliers are added only by Power Line Grid Boosters and Wild symbols with multipliers.
When a cell with a multiplier contributes to a win, the multiplier is applied to that win.
When multiple cells with multipliers contribute to a win, all their values are summed and then applied to the win.
Multipliers are removed immediately after being applied to wins, along with the winning symbols.
When a cell with a multiplier is cloned, the multiplier is also copied to the target cell.
Wild symbols are added only via the Wilds Grid Booster and cannot appear during spins.
Substitutes for all symbols in the paytable.
Bonus Game
Surface Search
Triggered by collecting at least 40 winning symbols in the main game.
At least one spin with all 4 Grid Boosters is guaranteed.
This bonus retains the mechanics of the main game, with the differences described below.
The bonus game always begins with a spin in which all 4 Grid Boosters are activated, one at a time, randomly, after the grid stabilizes.
During the bonus game, the collection meter tracks winning symbols in 4 segments of 8 symbols each.
The number of Grid Boosters for the next spin depends on how many symbols were collected in the previous spin. Each filled segment awards 1 Grid Booster for the next spin.
When at least one segment is filled during a spin, another Free Spin is awarded. If no segments are filled, the feature ends. The number of re-spins is unlimited.
From the second spin onward, the symbol count always resets to 0.
Toxic Vault
Triggered by collecting at least 72 winning symbols in the main game.
This Bonus Game uses the same mechanism as the SURFACE SEARCH Bonus Game, with the differences described below.
The number in the center is 4, meaning a second Free Spin is guaranteed with all 4 Grid Boosters.
Awards 2 Free Spins
Win Ways
The winning combination requirements stated in the main game also apply during bonus features or free spins, unless otherwise stated. Each bet entitles you to all winning combinations, unless otherwise stated.
To achieve a winning combination, four or more adjacent symbols must appear anywhere on the reels.
After each win, the symbols in the winning combination are removed and new ones are added. This continues until no new wins remain on the reels.
Pros & Cons
Pros
- Buy Free Spins
- Extremally high evaluated – 7.1
- Design is fine
- Max Win – x12000.00
- The slot was commended for his quality
- €/$0.10 per spin is a starting bet in the Doctor Dust
- Basic standard of RTP
