Enter the futuristic slot creation lab of Doctor Electro on the slot from Kalamba Games and be part of an electrifying reel adventure on up to 16,807 ways. Hyper Spins, two personal bonus jackpots and a free spins round can lead to wins of up to 1,480 times your bet on a single spin. Plus, you can access the feature directly by using the Hyper Bonus buy option.
Doctor Electro is a video slot with five reels, four to seven rows and 1,024 to 16,807 ways to win. Pays are awarded for two to five matching symbols on adjacent reels from left to right only. Enter the world of the wacky scientist on desktop or mobile from 0.30 to 36 credits per spin. The RTP of this high variance game ranges from 96.23% to 97.55% depending on whether the Hyper Bonus is used.
The futuristic lab of Doctor Electro is in the background of the game window while he stands to the left on a hoverboard. Watch out as he will pull the lever to trigger the Hyper Spins. There is a lot going on in the gameplay with frequent stroboscope flashes, firing noises and other sci-fi sound effects.
The full set of card royals from 9 through to A is at the low end of the paytable, each awarding 1.33x your bet for a single five of a kind. They are followed by four lab assistants. Hit five across the reels to win 2x to 2.5x your bet. Doctor Fortuno is the top symbols with 3.33x your stake for a 5OAK.
A fire orb is the wild symbol, substituting for all regular pay symbols. A Cryptex-style icon is the expansion symbol while the golden icon marked with the word bonus is the scatter on this slot.
Doctor Electro Slot Features
As usual with a slot from this provider, there is a lot happening on the reels with different features, personal jackpots, random Hyper Spins and a Hyper Bonus buy option. We will try to take you through them in the order they happen in a session.
First up is the Cryptex-style expansion symbol as it appears very often, especially in the base game. In default mode, the game window is in a 5×4 format with three more rows covered on top of the reels. Each position has a meter with 1, 2 and 4 lightning strikes. Every time an expansion symbol lands, it will add one strike. The more meters are filled, the more ways to win will open during the Hyper Spins. The collection is bet sensitive and will be saved separately.
Land three expansion symbols to trigger 5 Hyper Spins, which cannot be retriggered. All position with a full meter will become active for the duration of the feature. The game window expands to 16,807 ways to win if all positions become active. More positions can be opened during the feature if there are still uncompleted meters. Any expansion symbol will act as in the base game. The reels reset to the default 5×4 format once the feature ends.
Next is the Free Spins feature, which is triggered when you land scatters on the first three reels in one spin. You will get an initial 8 free spins with the game window starting in the 5×4 default mode. The aim is to land expansion symbols during the free spins to increase the ways to win. Any completed meter will unlock one position and award +1 free spin. This continues until either all positions are unlocked or you run out of free spins.
And there is more. The game has two personal progressive jackpots with 1.50% of each bet contributing to them. The jackpot balances are saved in between sessions at each casino separately. The Gold Jackpot has a seed value of 100 times your bet while the Platinum Jackpot starts at 1,000x your stake. They are won when sufficient Doctor Electro and/or wild symbols land on a spin in the base game or free spins. You will need 12 to win the Gold and 14 symbols for the Platinum.
Too impatient to wait for an organic feature trigger? Then use the Hyper Bonus buy feature to gain direct access to the bonus round by placing one single large bet. Once you hit the button on the right of the game window, you will enter a second screen with four options:
- 8 free spins – cost is 42.16x your bet
- 15 free spins – cost is 101x your bet
- 20 free spins – cost is 154.50x your bet
- 25 free spins – cost is 214x your bet
Well, that was quite a mad slotting experience. The scientist rarely stands still for a few spins while the gameplay is rather fast-paced. Overall, an entertaining slot from Kalamba Games with good win potential. What we didn’t like are the high cost to buy the better features.