Dr Zappo

Dr Zappo is a video slot game developed by Hacksaw. The game is played on a 5×4 layout and features 14 fixed paylines. The theme revolves around mad scientists, a neon laboratory atmosphere, and eye motifs; symbols include figures like Dr Zappo, Ray Gun, and Robot. During the game, special symbols called EyeBall become active only when they land on the fourth row. These symbols shoot upwards, diagonally left, or diagonally right; they transform the symbols they pass through into Wilds, and these transformed Wild symbols can carry multipliers ranging from 2× to 200×.

Energy Fields operate like lab mining and are located on the left, top, and right edges of the grid; if an EyeBall symbol hits these areas, it bounces off at the same angle and continues to transform symbols in the other direction. The game includes three different free spins bonus rounds: "Eyeconic Bonus" with 3 scatter symbols, "No-Brainer Bonus" with 4 scatters, and "Hidden Epic Bonus – It’s Electrifying" with 5 scatters; each grants 10 free spins. In the No-Brainer Bonus, each activated EyeBall fires in two different directions simultaneously, while the Hidden Epic Bonus guarantees at least one EyeBall symbol on each spin, and scatter symbols do not appear during this bonus round.

Dr Zappo also offers a Bonus Buy option: players can purchase direct access to the Eyeconic or No-Brainer free spins round; the BonusHunt and ZigZag Zappo features also increase the chance of triggering bonuses or guarantee a certain number of EyeBall symbols. In summary, the main highlights of Dr Zappo are Wild EyeBall symbols, multiplier Wild transformations, various free spins rounds, and bonus buy options.

You can play it for real money.