Dr Zappo Slot Review
In 1939 Westinghouse rolled a 7-foot robot named Elektro onto the New York World's Fair stage, and it could walk, count on its fingers, and "smoke" a cigarette 🚬 while a crowd cheered.
There was no thinking going on inside, just relays and a record player, which describes a few of my dates, and it still came with a robot dog named Sparko 🐕 that people lined up to see.
Dr Zappo slot from Hacksaw hands that same showman's act to a mad doctor, with robot 🤖 heads on the reels and EyeBalls that turn symbols into Wilds carrying multipliers up to 200x.
Gameplay
The reels sit in a blue metal frame wired up like lab equipment, in front of a cartoon city street, with a man in a red suit on the left and the doctor and his monkey on the right. It looks like a Saturday morning cartoon gone slightly feral.
The game runs on a 5x4 grid with 14 paylines, and you get paid from the leftmost reel on adjacent reels with 3, 4, or 5 matching symbols. The RTPRTP stands for “Return to Player.” The RTP describes the total bet amount that a game returns to players over millions of spins, and that figure is represented by a percentage. Table games, such as Roulette, typically have higher RTPs than many slots.
RTP needs to be considered in conjunction with a game’s volatility rate. is 96.31% and the volatility is medium/high.
The max multiplier is 10,000x, the max win is $350,000, and bets run from $0.10 to $35.
At the top of the paytable, the top-paying character symbol pays 2x, 3x, and 5x for 3, 4, and 5 matching symbols, respectively. The Robot and Alien symbols pay 1x, 2x, and 3x.
The Ray Gun and Bomb symbols pay 0.5x, 1x, and 2x, while the A, K, Q, J, and 10 symbols all pay 0.1x, 0.5x, and 1x.
The Wild symbol replaces every symbol on the paytable and pays 5x for 5 of a kind, though you'll rarely be chasing that.
The EyeBall symbol only lands on the bottom row, and once the reels settle, each EyeBall fires from left to right in 1 of 3 directions: straight up, diagonally left, or diagonally right.
Every paying symbol on its path turns into a Wild, and each new Wild is either plain or carries a multiplier from 2x up to 200x.
The EyeBall itself becomes a Wild too, and an EyeBall that hits another EyeBall adds a multiplier.
An EyeBall that hits an existing Wild adds a multiplier of 1x to 200x to it, and when a Wild already has one, the new value is added on top. Multipliers inside the same win add together.
Three bounce fields sit on the left, top, and right edges of the grid. An EyeBall that hits one bounces off at the same angle and keeps turning symbols into Wilds, and a head-on hit sends it straight back.
Features
FREE SPINS:
Landing 3, 4, or 5 FS symbols in the base game awards the Eyeconic, No-Brainer, or Hidden Epic Bonus round, respectively, and each round gives 10 Free Spins.
Eyeconic:
The EyeBall lands more often than in the base game, and every later round keeps that. Landing 2 or 3 FS symbols during the round adds 2 or 4 Free Spins, respectively.
No-Brainer:
Each EyeBall that activates fires in 2 different directions in the same spin. The same 2 or 4 extra Free Spins apply.
Hidden Epic Bonus:
It keeps the No-Brainer rules and guarantees at least 1 EyeBall on every Free Spin. FS symbols can't land during the round, so it can't be retriggered.
BUY BONUS AND ANTE BET:
Buy Bonus sells entry to the Eyeconic round for 50x and the No-Brainer round for 200x. The Hidden Epic Bonus can't be bought.
The Ante BetAn Ante Bet is an option that costs a percentage of your bet but increases your chances of landing triggering symbols that initiate a feature. costs 3x per spin and makes each spin 5 times more likely to trigger a bonus round, and it stays on until you switch it off.
A second Ante BetAn Ante Bet is an option that costs a percentage of your bet but increases your chances of landing triggering symbols that initiate a feature. costs 100x per spin and guarantees at least 2 EyeBalls on every spin. FS symbols can't land alongside EyeBalls, so no bonus round triggers while it's on.
Performance
I put the slot through the base game and every Free Spins round, and it held up without a single glitch.
Maximum Win
The max win is $350,000, which you collect by hitting the max multiplier of 10,000x at the top bet of $35. The smallest bet you can place is $0.10.
Conclusion
The money here comes from EyeBall multipliers stacking on Wilds, because the best regular symbol pays a sliver of what a win packed with added multipliers does.
That's also the only road to the max multiplier, which sits 2,000 times above the best 5-of-a-kind, so you need several EyeBalls landing multipliers on one winning line and I'd call it a lottery ticket.
The RTPRTP stands for “Return to Player.” The RTP describes the total bet amount that a game returns to players over millions of spins, and that figure is represented by a percentage. Table games, such as Roulette, typically have higher RTPs than many slots.
RTP needs to be considered in conjunction with a game’s volatility rate. makes this a longer session game. A max multiplier this size on a medium/high volatility game is a player-friendly match, so kudos to Hacksaw.
Both Buy Bonus rounds and both Ante Bets sit within a hair of the base game RTPRTP stands for “Return to Player.” The RTP describes the total bet amount that a game returns to players over millions of spins, and that figure is represented by a percentage. Table games, such as Roulette, typically have higher RTPs than many slots.
RTP needs to be considered in conjunction with a game’s volatility rate., so paying more buys speed and not a better return, and the 100x Ante BetAn Ante Bet is an option that costs a percentage of your bet but increases your chances of landing triggering symbols that initiate a feature. is the priciest way to chase EyeBalls.
High-variance players with a big bankroll who like watching multipliers stack are the target; players who want steady small wins from the paytable should look elsewhere.
Slot Details
Game Provider: Hacksaw
Game Type: Video Slots
PaylinesPaylines are preset lines that run across the reels, and when you land matching symbols on them, that will result in a payout. The more paylines, the more ways you can win, but also the higher your bet per spin.: 14
RTPRTP stands for “Return to Player.” The RTP describes the total bet amount that a game returns to players over millions of spins, and that figure is represented by a percentage. Table games, such as Roulette, typically have higher RTPs than many slots.
RTP needs to be considered in conjunction with a game’s volatility rate.: 96.31%
Volatility RateSlot games can have low, medium, high, or extremely high volatility rates (or a combination thereof).
The less volatile the game, the more often it should pay out, but the lower the amount, the less the payout, as this is in keeping with the risk you’re taking. Volatility rate should be considered in conjunction with a game’s RTP.: Medium/High
Bonus Round: No
Progressive: No
Free Rounds: Free Spins
Max Multiplier: 10,000x
Max Win: $350,000
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