Book of Stars is a 5 reel, 20 payline video slot from Novomatic that can be played from 40p to 50p and £16 to £20 a spin on all devices (including tablets and smartphones). Discover the secrets of the starry sky with the sun god Helios as you benefit from a special expanding symbol in the Free Games feature.
Looks wise, Book of Stars looks rather good – set under a starry sky backdrop, it has a Greek mythology theme as you join the sun god Helios and night goddess Nyx. Symbols on the reels include A, K, Q, J and 10 playing cards as well as the gods mentioned and the adventurous researcher/explorer. The latter is the most valuable symbol giving you 250 times your stake for 5 across a payline.
The scatter is the Book of Stars which gives you 2, 20 or 200 times your stake for 3, 4 or 5 on a payline. If you get 3 or more, you will trigger the Free Games feature with 10 free spins granted. 3 or more scatters during the feature will give you an additional 10 free spins.
Before the feature plays out, 1 symbol is randomly chosen to become the special expanding symbol – this symbol can expand to take over 3 positions on the reel it appears on. It will only expand if it will give you a winning combination. If you get a high value symbol and 3 or more on a free spin, prepare yourself for big wins.
Furthermore, there’s a ring wild which replaces all other symbols including the scatter – this symbol only comes into play if you activate the Extra Bet feature. This increases your stake from 40p to 50p at minimum stakes for example. The wild only appears on reels 2 and 4 and can act as an extra scatter – this allows you to trigger the all-important Free Games feature more easily.
Overall, Book of Stars is a good video slot – it’s highly volatile as you’d expect and bears a lot of similarities to classics like Book of Ra Deluxe and Lord of the Ocean. I would recommend the Extra Bet feature as this gives you a wild symbol which can lead to Free Games feature access and bigger wins once in the feature.