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King Arthur slot from Microgaming

King Arthur slot from Microgaming
The legendary tales inspired by kings, handsome princes and princesses, noble knights, and fair maidens are still popular and relevant nowadays. Microgaming added this colourful King Arthur slot machine to their range of epic sagas in 2012. Even though it lacks Free Spins, it contains all the elements a legendary medieval slot needs. 2 types of Wilds, an Excalibur bonus round where you are challenged to pull swords out of stones, and a Camelot bonus round where you have to guide King Arthur back to Camelot to receive a bonus win multiplier - all exciting features.

So, the machine comes with more than enough adventurous traits to make you curious and start spinning the reels. All the symbols are beautifully decorated, with Celtic ornaments, and easy to distinguish. The historical action with Medium Volatility is played out on a 5x3 grid, crossed by 20 pay lines. It’s worth mentioning that the slot is built with an RTP of 95.07%, i.e. under the industry standard.

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Personal testers’ opinion

Even though this King Arthur slot might not be the most attractive machine, there is a good chance it will grow on you after trying it in the DEMO mode. Admittedly, the theoretical RTP that Microgaming used in the game construction feels scanty nowadays, but that doesn’t mean you cannot get good prizes. Before playing, you should test if it is in a hot or cold mood (at some big and famous casino). You might end up with some good cash if you are lucky and the machine is hot. But most regularly, even with the support of the 2 Wilds and some mid-lucrative bonus rounds, the game doesn’t keep the balance well. Therefore we give negative recommendations to the bonus hunters - 3.11 (out of 10) wagering points. As for the sessions with real deposits on the King Arthur slot machine, despite the large bet size range (up to 100 CAD per spin), which can please one high-roller, the average payouts are often not 'noble' enough to wait on any of the medieval bonuses, i.e. neutral advice.

Hidden parameters 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 17,52%.
  • The distribution of the winnings is 70% in the usual spins and 30% in the bonus feature.
  • The maximum payout during the tests was 223x.
  • The average winning from the bonus was 30x.
  • Volatility is 4,79 out of 20 (average).
  • Cycle length is average.
  • The rating of the slot machine for the wagering is 3,11 out of 10.
  • RTP of 95,07% does not allow getting a positive mathematical expectation at the casino.


  • x2 Wild King Arthur - Rightfully the most valuable symbol (2000x for 4OAK and 10000x for 5OAK), which substitutes for all other symbols, other than Wild Merlin, Excalibur Scatter, and Camelot Bonus symbol, and doubles all wins it participates in.
  • Wild Merlin - regular Wild, replacing all symbols other than x2 Wild King Arthur, Excalibur Scatter, and Camelot Bonus symbol.
  • Excalibur Scatter - 3, 4, or 5 of them will multiply your win up to 32x, depending on how many swords you manage to pull out of the stone.
  • Camelot Bonus round - Land 3, 4, or 5 Camelot symbols (modestly paid), and you are allowed to guide King Arthur home through an uncomplicated labyrinth of paths. You can also decide to take your bonus win and leave the King hanging high and dry. If you decide to be noble and guide the king, you get to choose whether you take a left or a right turn the first 2 times. After that, King Arthur thinks he knows better than you which path to take, so you’ll have to follow him and see which multiplier awaits you at the gate of Camelot. You might lose all your hard-earned coins or quadruple them and get back on your horse with a smile on your face.


  • Number of reels - 5
  • Number of pay lines - 20
  • The cost of one coin is from 0.01 to 0.50
  • Number of coins per line - from 1 to10
  • The range of bet sizes - from 0.01 to 100
    Maximum winning - x10,000 (5 symbols of King Arthur).
  • Wild symbol - yes (2 Wild symbols — King Arthur and Wizard Merlin).
  • Scatter - yes (Sword)
  • Risk game - yes
  • Bonus game - yes (3-5 symbols of Lock trigger the bonus of Quest Game in which rules of the bonus game and the game of risk are connected).
  • The expected percentage of RTP payments in the King Arthur slot is 95.07%

Where to play?

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Written by Kamen Valev
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