Hacksaw Gaming · 14 Paylines
Dr Zappo
Which RTP will you actually get?
Studios certify the same game at several returns and the casino picks one. The headline figure is usually the best of them.
We have not verified this game at a casino yet
We only publish a per-casino RTP once someone has opened the game and read it off the info panel. Until then, the certified files below are what the studio ships — check the in-game panel against them before you spin.
Certified files for this title
The studio certifies 4 versions of Dr Zappo, from 96.31% down to 92.31%. That is a 4 point spread, and which one you get is the operator's choice, not yours.
Score
Computed from the published rubric. Nothing here is hand-assigned.
| Dimension | Score | Weight | Why |
|---|---|---|---|
| RTP | 7.4 | 0.35 | 96.31% against a slots median of 96.00% across 13188 titles. |
| Max win | 7 | 0.2 | 10,000x against 13186 other slots titles. |
| Hit rate | 9.8 | 0.2 | 45% against 1653 other medium-high volatility titles. |
| RTP consistency | 6 | 0.25 | 4 certified files from 96.31% down to 92.31%, a 4.00 point spread. |
Scored on 4 of 4 dimensions. Dimensions we cannot compute are dropped and the remaining weights renormalise, so missing data never counts against a game. See the rubric.
Specification
Every row is a stored field. Blank means we have not verified it, not that it does not exist.
Dr Zappo
Hacksaw Gaming · 14 Paylines
- RTP (headline)
- 96.31%
- Lowest certified file
- 92.31%
- Volatility
- medium-high
- Hit frequency
- 45%
- Max win
- 10,000x
- Mechanic
- 14 Paylines
- Reels / rows
- not published
- Paylines
- 14
- Ways to win
- not published
- Bonus frequency
- not published
- Bonus buy
- Yes
- Bet range
- not published
- Certification
- not published
- Released
- 2026-09-30
- Studio
- Hacksaw Gaming
Compared with similar slots
Chosen by mechanic, volatility band and nearest maths — not by theme.
| Dr Zappo | Cash Crooks | Drill the Thrill | |
|---|---|---|---|
| RTP | 96.31% | 96.22% | 96.32% |
| Lowest certified file | 92.31% | 92.11% | 92.27% |
| RTP spread | 4.00 pts | 4.11 pts | 4.05 pts |
| Volatility | medium-high | medium-high | medium-high |
| Hit rate | 45% | — | 27.12% |
| Max win | 10,000x | 10,000x | 10,000x |
| Bonus buy | Yes | Yes | Yes |
| Score | 7.5/10 | 6.6/10 | 6.7/10 |
Review
Dr Zappo features an RTP of 96.31%, medium-high volatility, and a maximum win of 10,000x. Released on September 30, 2026, this slot from Hacksaw Gaming offers a solid return compared to the studio’s average. Players can expect a hit rate of 45%.
The math — RTP, volatility, hit rate, max win
The RTP options for Dr Zappo are 96.31%, 94.36%, 94.36%, 92.31%, and 92.31%. Some casinos may operate a lower RTP version of this title, so players should check the in-game help screen to confirm the live figure. The volatility is medium-high, and the max win is set at 10,000x.
How it plays
Dr Zappo features a grid with 14 paylines.
Features
The game includes free spins and a bonus buy option. There is no jackpot available.
Verdict
Dr Zappo is suited for players who appreciate medium-high volatility and the potential for significant wins, given its max win of 10,000x. The higher RTP option also makes it appealing for those familiar with Hacksaw Gaming’s offerings.
Where to play
Ranked on our casino rubric, not on commission.
How we make money
Slotometry earns a commission when you open an account through some of our links, at no cost to you. Commission never affects a score: scores are computed from the published rubric and the inputs are on this page so you can check the arithmetic yourself.
Play responsibly
Slots are designed to return less than they take. Nothing on this page is a strategy for winning, and no RTP figure changes that. 18+ only.