Crazy Doctor
Science-themed transformation slot from Royal Slot Gaming
The SlotRanker Score is calculated from the visible data below. It is not affected by affiliate deals, and it cannot be bought.
Why this score
Partial data (71%)Five weighted signals shape the composite. Four context signals refine ties. See how we rate for the full methodology.
Popularity blends real player search demand (~30 markets) with a catalogue-derived proxy; games without measurable search demand use the proxy alone. Not live play telemetry.
SlotRanker Score: 51 — Crazy Doctor by Royal Slot Gaming
https://slotranker.com/royal-slot-gaming/crazy-doctor#scoreSlot Summary
How It Plays
The paid game evaluates combinations through 1024 ways on its 5-reel format. Wild Symbols can assist those combinations before the Flask collection opens the separate feature.
During Free Spins, character positions may be converted into the same character. The mechanic concentrates matching symbols across the field instead of merely adding another ordinary spin.
Theme & Atmosphere
Science supplies the setting, with the laboratory functioning as the place where symbol transformations occur. The Cartoon treatment keeps the doctor and experiments stylized rather than realistic.
Fantastic and Magic themes overlap through the fictional solution that changes characters into matching forms. That mixture lets the scientific premise behave more like visual alchemy than formal research.
Features & Win Potential
Bonus symbols represented by Flasks activate Free Spins after 3 are collected. Wild Symbol support remains available around the feature's transformation rule.
Additional Free Spins can lengthen the bonus, while the Progressive Jackpot provides a separate prize path. These features sit alongside the x8100.00 maximum win rather than replacing it.
Bonus & Free Spins
Free Spins begin automatically after 3 Flask symbols are collected. Inside the round, character symbols can change into identical characters, improving the chance of concentrated matching positions.
Additional Free Spins may extend the feature after its initial trigger. The documented total can reach 150, giving repeated transformations more room to affect the final result.
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Compare Crazy Doctor with other games
 Crazy Doctor Score 51This game |  Blood Suckers Score 79 |  Sticky Bombs Score 66 |  Gold Lab Score 65 |  Machine Gun Unicorn Score 65 | |
|---|---|---|---|---|---|
| Identity | |||||
| Studio | |||||
| Released | 9/10/2018 | 11/10/2013 | 3/17/2022 | 8/12/2016 | 5/6/2015 |
| Math | |||||
| RTP | — | 98% | 95.8% | 96.09% | 97.18% |
| Volatility | — | Low volatility | High volatility | Medium volatility | Medium volatility |
| Max win | 8,100× | 1,014× | 1,445× | — | — |
| Format | |||||
| Reels | 5 | 5 | 5 | 5 | 5 |
| Layout | 5x4 | 5x3 | 5x3 | 5x3 | 5x3 |
| Paylines | 1024 | 25 | 20 | 25 | 10 |
| Min bet | 0.5 | 0.25 | 0.2 | 0.1 | 0.1 |
| Max bet | 1000 | 50 | 200 | 50 | 100 |
| Features | |||||
| Progressive | ✓ | — | — | ✓ | — |
| Wild symbol | ✓ | ✓ | ✓ | ✓ | ✓ |
| Free spins | ✓ | ✓ | ✓ | — | — |
| Scatter symbol | — | ✓ | ✓ | ✓ | ✓ |
| Multiplier | — | ✓ | ✓ | — | ✓ |
| Bonus game | — | ✓ | — | — | — |
| Respins | — | — | — | ✓ | — |
Every number is shown as a delta against Crazy Doctor.
Questions & Answers
Crazy Doctor FAQ
Collecting 3 Flask symbols automatically starts the Free Spins feature, according to Royal Slot Gaming's game page.
Character symbols can transform into identical character symbols, increasing the chance that more matching positions appear together.
The game uses 1024 ways across a 5-reel format rather than a small group of fixed paylines.
Royal Slot Gaming lists the maximum Multiplier for Crazy Doctor as x8100.00.
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