DoubleDown Casino’s Three Kings boosts free games bonus rounds by adding a progressive feature

  • Three Progressive Free Games meters are displayed to the side of a 4 x 5 reel set (image 1).
  • Each of the progressive meters may randomly increase as more games are spun. Flames appear within the meters when the number of free games reaches an average. This does not indicate a higher chance of triggering the free games (image 2).
  • Any three same-colored bonus symbols triggers the Progressive Free Games feature. Green bonus symbols only appear on reels 1-3, red on 2-4, and purple on reels 3-5 (image 3).
  • Once triggered, a dialogue appears displaying the number of free games won and the additional wild symbols (image 4).
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Machine Stats

Game play
Hit frequency 46%
Volatility 7.2
Spins until a bonus 112
Distribution of RTP as % of total RTP
Base game 71%
Bonus game (Progressive Free Games) 29%
RTP range
Minimum range 86%
Median 98%
Maximum range 110%

Distribution of wins

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