EyeBall Wilds
EyeBall symbols shoot in one of three directions: straight up, diagonally to the left or diagonally to the right. Paying symbols they cross turn into Wilds.
The base game is easy to describe. An EyeBall shoots straight up, diagonally left or diagonally right, and every paying symbol it crosses becomes a Wild. Energy Fields redirect the shot, so one EyeBall can sweep across the grid in more than one line. If an EyeBall runs into a Wild or another EyeBall, it adds a multiplier value to that Wild. You can follow all of it on screen without a chart.
Three free-spin doors sit behind the FS symbols, and all three give 10 free spins. 3 FS symbols open Eyeconic, with a higher chance of EyeBalls landing. 4 FS symbols open No-Brainer, where EyeBalls shoot in two directions. 5 FS symbols open the hidden It's Electrifying bonus, with at least 1 EyeBall on every free spin. Hacksaw lists four RTP settings for Dr Zappo: 96.31%, 94.36%, 92.31% and 86.22%. The house you play on sets which one runs, so check the bet panel. Hacksaw's game page does not list a bonus buy, so look for one on the panel instead of assuming it.
The max win is 10,000x the bet. Hacksaw rates the volatility 3 out of 5, which we list as medium. We scored Dr Zappo 7.5 out of 10. Hit Play free demo first. It opens the Hacksaw page in a new tab. Then pick a casino if you want to play for real.
Dr Zappo
7.5
/10
Hacksaw Gaming · EyeBall · 10,000x
The mad genius is at it again. Dr Zappo and Mr. Brain have run a new experiment, and this time it is a slot about EyeBalls. EyeBall symbols land, shoot in one of three directions and turn paying symbols into Wilds. When one hits an Energy Field it bounces off and keeps going, changing more symbols on the way.
- Grid
- Paylines (grid size TBA)
- RTP
- 96.31%
- Volatility
- Medium
- Max win
- 10,000x
- Bet
- TBA
- Released
- 29 Sep 2026
EyeBall WildsEnergy FieldsEyeconicNo-BrainerIt's Electrifying
Play free demoUpdated 30 Sep 2026 · By Daniel H · Edited by Daniel B
Where to play Dr Zappo
Crypto casinos where Dr Zappo is in the lobby. Not the same three casinos on every review. Wagers at Gamdom count toward the Gamdom bonus.
Our take
Read this one if you want a Hacksaw where the base game explains itself. EyeBalls shoot, Energy Fields redirect them and three bonus doors sit behind the FS symbols. Skip it if you want a fixed grid you can read like a chart. Browse every review on slots or every studio on providers.
How Dr Zappo plays
Energy Fields
An EyeBall that hits an Energy Field bounces off and continues in another direction, transforming symbols on its way. If it hits an existing Wild or EyeBall, it adds a multiplier value to that Wild.
Eyeconic
3 FS symbols award 10 free spins with an increased chance of landing EyeBall symbols.
No-Brainer
4 FS symbols award 10 free spins in which EyeBall symbols shoot in two different directions.
It's Electrifying
5 FS symbols award the hidden bonus: 10 free spins with at least 1 EyeBall landing on every free spin.
Bonus buy
Hacksaw's game page does not list a bonus buy. If the house offers one, the price sits on the bet panel. A buy skips the wait. It does not improve the return.
Dr Zappo demo
Free play · 18+
Play free demo opens the studio game page in a new tab. Same studio build. 18+.
If you like Dr Zappo
FAQ
- What's the RTP on Dr Zappo?
- Hacksaw lists 96.31%, 94.36%, 92.31% and 86.22%. Check the bet panel on the house you play to see which one is running.
- Can I buy the bonus?
- Hacksaw's game page does not list a bonus buy. Some houses offer feature buy on Hacksaw games and some do not, so look at the bet panel. A buy skips the wait. It does not improve the return.
- What's the max win?
- 10,000x the bet. Hacksaw rates the volatility 3 out of 5, which we list as medium.
- Where should I play it?
- Search for Dr Zappo in the lobby of any casino you already use. New releases do not reach every house on day one, and the RTP setting can differ from house to house. Your play counts toward rakeback, raffle or rain depending on the house. See rakeback vs wagering for how that differs from a wager requirement.
- Is there a demo?
- Yes. Use Play free demo — it opens the studio game page in a new tab. Same studio build. 18+.