Hacksaw Gaming Launches Dr Zappo: A Familiar Mechanic in a New Disguise
Hacksaw Gaming has released its latest slot, Dr Zappo, and if you’ve spent any time with the studio’s earlier title Jaws of Justice, you’ll likely recognise the engine beneath the bonnet almost immediately. According to a review published by Bigwinboard, the bouncing laser beam mechanic that made Jaws of Justice a hit has been lifted wholesale and dropped into an entirely different setting — a wacky, cartoon sci-fi world with more than a passing resemblance to Futurama or Rick and Morty.
The game runs on a 5x4 grid with 14 paylines and has been given a medium volatility rating of 3 out of 5, a notch lower than its predecessor. That makes Dr Zappo a somewhat more measured experience than Jaws of Justice, which could appeal to players who prefer a less aggressive variance. Bets range from €/£0.10 up to €/£100, and the top RTP configuration sits at 96.31%.
How the EyeBall Mechanic Works
The headline feature centres on EyeBall Wild symbols that land on the bottom row of the grid. Each EyeBall shoots in one of three directions — straight up, diagonally left, or diagonally right — converting every pay symbol in its path into a wild. Some of those wilds carry additive multipliers ranging from x2 all the way up to x200. When multiple wild multipliers form part of the same winning combination, their values are added together rather than multiplied, which keeps things readable if not always earth-shattering.
Energy Fields sit along the left, top, and right edges of the grid, allowing EyeBalls to bounce off them and continue transforming symbols in a new direction. If an EyeBall hits an existing wild, it adds to that wild’s multiplier. If two EyeBalls collide, a multiplier is also added.
Bonus Rounds and Feature Buys
Dr Zappo includes three distinct bonus rounds — Eyeconic, No-Brainer, and It’s Electrifying — alongside a handful of feature buy options for those in eligible regions. BonusHunt FeatureSpins cost 3x the bet and increase bonus trigger likelihood fivefold, while ZigZag Zappo FeatureSpins cost 100x and guarantee at least two EyeBall symbols per spin. Eyeconic can be bought directly for 50x the bet, and No-Brainer for 200x.
What This Means for UK Players
For UK slots fans, Dr Zappo is a reasonably accessible medium-volatility option with a respectable RTP ceiling and an eye-catching visual style. Those new to Hacksaw’s bouncing mechanic should find it genuinely engaging. Veterans of Jaws of Justice, however, may find little that surprises them beyond the new coat of paint. Keep an eye on our casino news section for further releases, and visit our slots guides if you’re looking to get to grips with how volatility and RTP affect your sessions.
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