Doctor Electro Slot Review – Kalamba Games

I don’t review many slots by Kalamba Games. This isn’t because I dislike the provider or their slots. It is mainly due to their games, not being talked about in the casino community. Their most popular slot has been ‘Machina‘ which was created thanks to their deal with Big Time Gaming last year. Now we have a new title by the provider titled, ‘Doctor Electro.’ This slot is already available on all sites.

Without getting too much into my reasons for not enjoying Kalamba as much (or playing, to be honest), let’s jump right into the review and check out what’s on offer.

doctor electro slot review

This slot has a theme based around a mad scientist called ‘Doctor Electro.’ That is quite logical since the name of the game is the same. The background is set in his laboratory, where he does his crazy experiments. The graphics for Doctor Electro are detailed well and show off a unique art style. On the left, you see Doctor Electro himself floating on one of his creations. One aspect I do like is the simple animations in the background and on the doctor floating. It makes it very easy on the eyes, alongside the beautiful Kalamba UI.

This slot has a setup of 5 reels by four rows; this includes up to 1024- 16807 ways. This slot is low – medium variance due to the max win capped at 2,000x. The set RTP is 96.23-97.55, you can bet from £0.30-£300.

Doctor Electro Slot Review Paytable & Symbols

Doctor Electro Symbols

This slot has 14 symbols in total; this includes six low paying symbols. These are represented by 9,10, J, Q, K, And A. These symbols are a necessary coloured font with no background. There are also 5 premium symbols represented by 4 different characters, and doctor Electro himself. The highest paying symbol is Doctor Electro; this symbol pays 3.3x for 5 across all reels. There is also a wild symbol which substitutes for all paying symbols and a scatter symbol to unlock the bonus feature.

The last is the expansion symbol; this helps you unlock the hyper spins, which I will talk in detail about in this review in the next chapter. So you better not walk away!

Doctor Electro Slot Review Features

Central to Doctor Electro is the hyper spins and free spins feature. You can buy the ‘Hyper Bonus,’ you can buy 8,15,20 and 25 free spins for different multiples of your bet size. You can also trigger this bonus by landing 3 or more expansion symbols; this will award you 5 Hyper spins. Of course, you can also increase each column height by collecting expansion symbols one each. The second feature is the standard bonus feature; this is triggered when you land 3 or more bonus symbols. You will be awarded 8 free spins, collect symbol expansion symbols during these spins to expand columns and earn extra free spins. Not bad at all!


Overall,  this slot has unique qualities and mechanics but doesn’t have the volatility to match this. The max win is capped at 2,000x is low ad I would have thought for it to be higher after testing this game. Both free spin features have extra features active to help you with the possibility or a big win. There is also a bonus buy option for players who prefer this method.

Of course, the bonus buy has been contentious, but my personal opinion is that games with lower volatility should not have the option. Regardless, what do you guys think about this? Leave your thoughts in the comments section in the blow.

Gameplay – 3/5

Volatility – 3/5

Bonus Feature 3.5/5


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