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Book of stars slot

Greentube Novomatic presents Book of Stars slot. It has an original theme and contains several nice bonus features. The game has five reels and 20 lines. We also offer to read the opinion of the tester, who has already experienced success in this game. And you can play the demo of this slot for free in demo mode without registration. The RTP of the slot is 95.16%

Personal testers opinion

It is necessary to say about the frequency of falling out the pay combinations. This indicator is equal to 44.40%. Also, this means that almost half of the spins will bring a reward. At the same time, from the total fund of bets in these rounds will be paid up to 55%. It will be not easy to wait for the activation of free spins, only 1 spin out of 159 can triggers out a bonus (Statistically, 0,63%). No good recommendation about bonus wagering (3,52 out of 10.)

Hidden parameters and settings of Book of Stars slot (data from testing)

  • Book of Stars slot by NovomaticThe frequency of triggering the bonus feature is statistically, every 159th spins (0,63%).
  • The probability of a hit (any winning) is 44,40%.
  • Distribution of the winnings is 45% in the usual spins and 55% in the bonus feature.
  • The maximum payout during the tests was 448x.
  • The average winning from the bonus was 77x.
  • Volatility is 10,69 out of 20 (from average to high).
  • Cycle length is from average to long.
  • The rating of the slot machine for the wagering is 3,52 out of 10.
  • The RTP of 95.16% allows you to get a positive mathematical expectation.
  • Learn how to win at the Book of Stars slot machine.


  • Number of reels - 5
  • Number of pay-lines - 20
  • Bet line - from 0.01 to 0.40
  • The range of the size of bets - from 0.25 to 100
  • Maximum winning – x20 000 (Finder)
  • Wild symbol - yes (Book of Stars which at the same time is Scatter)
  • Scatter - yes (Book of Stars)
  • Free spins - yes (10 free spins with an additional symbol which extends on all reel, the bonus is triggered from 3-5 Scatters)
  • Additional option - yes (Extra Bet increases the payments in the bonus mode)
  • The expected percentage of payments (RTP) is 95.16%


Three scatters trigger free spins. The player will get 10 free games, which before starting, the slot will randomly select one character and enable it to expand to the entire reel. If in the main game, you activate the Extra Bet, then during free spins, you can operate an additional character - Ring. It falls on the reel 2 and 4 and substitutes all images.

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