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Doctor Electro Slot Review

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Doctor Electro Slot is a Kalamba Games slot launched in 2019. The game houses 5 reels and 16,807 paylines with a 96.23% RTP. This non-progressive slot game also features mobile, scatter symbols, wilds, free spins. This game has a jackpot of 1,480x bet and is available for playing on both desktop & mobile.



The secret laboratory of the weird Doctor Electro is now open for business, and everybody can visit it to admire the abilities of this awkward doctor ho plays with electricity. Doctor Electro is a five-reel video slot that offers 1,024 ways to win in the beginning, but players can benefit from up to 16,807 way to win during Hyper Spins and Free Spins.

Playable from $0.30 per spin, the Kalamba Games title is visually impressive. Punters can enjoy Hyper Spins or free spins, and can also win two types of Bonus jackpots, depending on the winning combo created by the Doctor himself and the Wild. Finally, there is the option to buy the Hyper Bonus feature through Hyper Bonus.

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This is a weird-looking laboratory, and it seems that it is placed somewhere in outer space because some of Doctor’s associates are definitely not from this planet. The excentric Doctor is the top-paying premium symbol, and his second-best scientist is actually a female Alien with telepathic powers.

His only human coworker is a scientist that looks like Boris from Count Dracula. A Monkey is next in line, followed by a Robot that uses a synthetic brain. Playing cards represent low-value icons. Bonus Symbols and Expansion symbols are there to trigger free spins and Hyper Spins, while the Blazing Wild substitutes for all regular icons.

Once you start spinning the reels, you will notice that the 2019 release offers 5 reels and 7 rows. Only four rows are available in the base game. To unlock all seven of them, you need to trigger Hyper Spins. With three rows, the game benefits from 1,024 ways to win. To win payouts, players need to land matching icons on successive reels, beginning from the leftmost reel.

High-paying symbols will pay even for two of a kind, while, when talking about simple playing cards, three of a kind is the minimum for landing payouts. Betting is fixed at 30 coins per spin, but the coin value can be changed. Bet from $0.30 to $36 per spin.

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Casino Bloke Best tips for Doctor Electro Slot

  • 1Symbols tend to land in stacks
  • 2Expansion symbols trigger 5 Hyper Spins
  • 3Bonus Scatters trigger free spins
  • 4In both features it is possible to expand the reel grid up to the max
  • 5The Expansion symbols expand the grid in both features
  • 6Two Bonus Jackpots are on the offer
  • 7Both Platinum and Gold Jackpot Bonuses are won with a certain winning combo
  • 8Combine Wilds and Doctor Electro to get one of two jackpots
  • 9The Hyper Bonus option allows you to buy the features
  • 10The RTP increases in Hyper Bonus


The Hyper Spins feature is triggered when three Expansion Scatters appear on the reels. Gamers get 5 Hyper spins. Now, during the base game, you will collect Expansion symbols on each column. Each time the Expansion symbol lands, it will light up lighting on a certain cell. The goal is to light up as many cells to get more ways to win and more unlocked cells during Hyper Spins.

Three Bonus Scatters that appear on the reels will get you a 2x bet win and 8 free spins. You begin with 4 rows, but each Expansion symbol that lands on the reels during the feature will light up a corresponding cell. Each time the entire cell is lit, it will be unlocked and award you with an additional free spin.

If you do not want to wait for Scatters and Expansion symbols, you can always buy the feature with Hyper Bonus Buy. There are four different levels that you can buy. Finally, there are two Bonus jackpots that you can win. Make a winning combination of 14 or more matching icons, including Wilds and Doctor Electro, and you will win the Platinum Level Bonus Jackpot. A winning combination of 12 matching icons including Wilds and Doctor Electro will get you the Gold Level Bonus Jackpot.


Like in other Kalamba Games titles that offer the Hyper Bonus option, the RTP can go up when you buy one of 4 Hyper Bonus levels. In the base game, the RTP is 96.23%. In Level 4 of the Hyper Bonus, the RTP is set at 97.5%. As for the top payout, it cannot go over 1,480x per single spin.

what we like

  • Lots of features
  • More freebies and ways to win possible during the feature
  • Crisp graphics

what we don’t like

  • No multipliers
  • Hyper Bonus is not always worth the investment


If you like video slots with complicated stories and interesting features, then Doctor Electro is a perfect game for you. It will take you a while before you fully understand how the special features function, but, once you do, you will be chained for your seats for hours.

Those of you looking for simple fun should not visit Doctor Electro’s laboratory. Our personal favourite is the Free Spis feature where you get more free spins and more ways to win. Note that it will take you a while before you trigger any of the features that are on the offer.

Doctor Electro Slot total score:

Total Score Overall

Game developed by:

Kalamba Games logo rectangle

Release year:2019

Available on:Desktop, Mobile

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