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Jekyll and Hyde slot from Microgaming

Jekyll and Hyde slot from Microgaming
Being released over a century ago, the classic tale by Robert Louis Stevenson is still an inspiration to people worldwide - artists, musicians, game developers, since we all have our dark side, don’t we?

In 2012 Microgaming put their ‘two cents in’ with the Jekyll and Hyde slot machine. If you favour uncomplicated old-school slots with Medium Volatility, this one should do the trick for you. Technically the machine is built on the usual elements: 5x3 grid, 243 pay lines, card symbols, Wilds, and Free Spins. Only during the bonus spins all Dr. Jekyll symbols will transform into the evil Mr. Hyde, guaranteeing big wins. We advise you to try the Thunderstruck Wild Lightning slot by Microgaming for free.

Dr. Jekyll is the main protagonist paying 1500 coins for 5OAK, but during Free Spins, Mr. Hyde turns out to be the generous one, evil as he may be, bringing more cash - 7500 coins for 5OAK. The concept of transformation to a polar character is riveting. Still, the game is lacking in RTP and some little twist as a multiplier, or perhaps frozen Wilds, to be more attractive and compete with slots of the same theme from other developers.

Check this dark but delightful slot out for free in the DEMO version on our page. No registration is required.

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Personal testers’ opinion about Jekyll and Hyde slot

We were excited by the gothic flair of the slot premise, which is excellent, and the story of the dubious man remains captivating in every way. However, Jekyll and Hyde slot machine would have made a greater impact if some spectacular animated action was added, plus any bonus game/feature variation besides the Free Spins. OK, the Free Spins come around reasonably often, we must admit, but their payments are mostly negligible. Our team scored the maximum of 39x the total bet in all the bonus games initiated, in one word - unimpressive. The music is pathetic, but if you mute it and switch your favourite playlist on, that issue is easily resolved. However, one other issue cannot be dealt with - the poor RTP (under the industry standard). Be aware of the theoretical percentage of return - 95.36% in a long distance. All in all, worth a few spins and find out for yourself if it’s your cup of tea or not.

Hidden parameters and settings of the slot (data from the testing team)

  • The frequency of triggering the bonus is statistically, every 177th spin (0,56%).
  • The probability of a hit (any winning) is 22,94%.
  • The distribution of the winnings is 70% in the usual spins and 30% in the bonus feature.
  • The maximum payout during the tests was 431x.
  • The average winning from the bonus was 39x.
  • Volatility is 5,74 out of 20 (average).
  • Cycle length is average.
  • The rating of the slot machine for the wagering is 3,91 out of 10.
  • RTP of 95,36% does not allow getting a positive mathematical expectation at the casino.


  • Fiery Wild Symbol - replaces all other symbols, except for Jekyll and Hyde Scatters.
  • Free Spins - Land 3 or more Jekyll and Hyde Scatters and 10 Free Spins are awarded where all Dr. Jekyll symbols will turn into Mr. Hyde symbols. Free Spins can be re-triggered.


  • Number of reels - 5
  • Paymaster number of combinations - 243
  • Cost of the same coin - from 0.01 to 0.10
  • Number of coins per line - 1-10
  • The range of the size of bets - from 0.25 to 25
  • Maximum payout - x1500 (5 symbols of Doctor Jekyll) in the usual spins and x7500 (5 symbols of Doctor Hyde) during free spins.
  • Wild symbol - yes (a fire inscription of Wild).
  • Scatter - yes (Logo of the slot)
  • Free spins - yes (3 and more Scatter symbols trigger 10 free spins with the additional symbol).
  • The expected payout percentage - 95.36%

Where to play?

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Written by Kamen Valev
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