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Book of Stars

Book of Stars Introduction

Greentube's Book of Stars, available at, retains the retro slot machine feel customary to this provider while embellishing the game with an epic space fantasy theme that's a feast for the eyes. 

Explosions in space, statues of Greek astronomers and meticulously ornate symbols are just the veneer of a fun slot with great special features such as Extra Bet, Special Expanding Symbol, and Free Spins.

Book of Stars Game Features

Book of Stars unfolds with a conventional layout of 5 reels by 3 rows. The other adjustable feature besides pay lines is your bet amount. Set it anywhere between a minimum of € 0.01 and a maximum of € 50 depending on your bankroll and play style.

Besides a 'Play' button standing in for the spin button and a 'Pay Table' button, other clickables include the following:

  • Autoplay
  • Bet Lines (1 to 20)
  • Bet/Line € 0.01 to € 50
  • Gamble (see 'Free Spins and Bonuses')
  • Extra Bet (see 'Free Spins and Bonuses')

Book of Stars Free Spins and Bonuses

As hinted earlier, Book of Stars is not just a stellar explosion of fancy visuals. It packs some solid special features that are sure to get you starry-eyed with chances for some big wins.

Scatter Symbols are represented by the Golden Book Symbol. These substitute for all other symbols except for Special Expanding Symbols. Three Scatter Symbols anywhere on the reels trigger 10 free spins inclusive of a Special Expanding Symbol. You can unlock more free spins during this special mode.

During Free Spins and after regular symbols have paid out, one Special Expanding Symbol may expand to cover up to 3 symbols on the reel. Its payout value remains the same as its corresponding regular symbol, but it also pays out along non-adjacent positions and all lines played. Keep in mind, however, that this symbol can only expand if enough symbols for a win are present.

At any time during the game, you can click on Extra Bet (top right of screen) to de/activate this special function. It's represented by a Golden Ring Symbol and appears on reels 2 and 4. It substitutes for all other symbols including Scatters and Special Expanding Symbols. 

Book of Stars Payouts

Winning lines payout from left to right and only the highest-paying win per line pays. Here's the entire constellation of symbols with their highest-paying values laid out:

Female Protagonist with Hat – 5x Symbol with highest bet value give you € 250,000

Golden Book (Scatter) - 5x Symbol with highest bet value give you € 200,000

Male Greek Astronomer - 5x Symbol with highest bet value give you € 100,000

Golden Owl + Female GreekAstronomer - 5x Symbol with highest bet value give you € 37,500

A & K - 5x Symbol with highest bet value give you € {{modm:7500.00}

Q, J, and 10 - 5x Symbol with highest bet value give you € 5,000

Book of Stars Graphics & Sound

Book of Stars is one of Greentube's prettiest-looking online slots. Despite the design team sticking to its retro guns awith a traditional formula that works for players who just want playability straight up without too many invasive gimmicks, the visuals are certainly attractive. Starting with the background, it's full to the brim with statues of Greek astronomers, columns, sparkling constellations and space storms.

The symbols on the reels are intricately ornate. You'll find statue heads, mechanical owls, spell books, and more. Whenever you achieve a win, decorations in the symbols shimmer, adding a neat, little effect to it all.

Most of the soundtrack opted for is a generic one utilised in other games by this provider. However, when you get a winning payline, sound effects more in line with the overarching theme of the gameplay. 

Book of Stars Conclusion

Book of Stars strikes a fine balance between giving players a traditional formula free of too many frills while also wrapping the whole package up in an attractive theme and visuals that are always a pleasant addition. The game's special features and maximum bet and win values, along with the Extra Bet feature will most likely appeal to high-rollers and players who like to have the option of amping up the risk factor. Does this sound like it’s right up your galaxy? So, sign in to and play Book of Stars now!  

About the Game Provider

Greentube is one of the most appreciated, well-known, and most experienced game suppliers of everything from software, games, and land-based gaming products in the world. With its launch in 1980 and their successful, international expansion only 2 years later, the company strived hard and reached all its goals quickly. Today it has offices and locations in over 50 countries all over the world and still exporting high-tech gaming equipment to over 70 countries. The company has 24,000 employees, all working to provide its players with brilliant products, which consist of, among others, 160,000 gaming terminals!

The way to its success can surely be found in its dual strategy as the operations go from being producers of high-tech gaming equipment and operators of electronic casinos, regular casinos and sports betting outlets, as well as technology and service partners in the lottery segments. As you can see, there is no stopping this brilliant company.

But we are here for its online video slots – and they are sure brilliant too. Currently, over 240 video slots are offered by Greentube, and they all offer us vivid themes, a grand gameplay, thrilling features, and big winning opportunities – which is why Greentube is one of the most beloved game suppliers on the markets. They also offer video slots for both online and land-based casinos, as well as Multigames, Jackpots, and Electronic Table Games.