Free slot: Book of Sun

How Book of Sun works

Are you a lover of ancient Egypt? Then the Book of Sun slot machine is for you. Created in 2018 by the provider Boongo, this slot is one of the best known of this provider. It's a slot that is not volatile, but can still pay you up to 5,000 times your initial bet. The starting bet can vary between €0.20 and €30 per round. It has a very low volatility and has a 97% RTP, which puts it in the upper-middle range.

Book of Sun is a classic slot machine, consisting of 3 horizontal lines for 5 vertical columns. It also has a bonus feature.

The different symbols of Book of Sun

Book of Sun is a slot machine with 9 different symbols and a wild symbol which is also used to get the free spins.

On this slot machine, it is the symbol of the Egyptian pharaoh who pays the most. While the symbols Q, J and 10 are the ones that pay the least.

If you want to know the value of each symbol according to the number of connections, you can find them in the following screen.

The different connections of Book of Sun

Due to its very classic starting grid, Book of Sun offers only 10 paylines on its slot machine. Whether it's lines, keys or any other way to pay, connections on Book of Sun are only made from left to right.

To discover each connection line, take a look at the following image.

How the Book of Sun bonus works

Like many slot machines that are made up of books, Book of Sun is no exception. To get free spins on this slot machine, the scatter symbol must appear a minimum of three times on a single spin.

Once you get all three books, you get 12 free laps. But before that, the slot machine will randomly choose a symbol for you.

Before your 12 free spins start, the computer will automatically choose a symbol that will be your main symbol during all your free spins.

Once the computer chooses the symbol, your 12 free games begin. Depending on the symbol you get, it will need to appear at least two to three times to connect.

As you can see in the following screen, the bluebird symbol only needs to appear twice on your screen to connect.

If it appears at least twice, then it will extend the full height of the square on which it is located and it will connect with the same symbol no matter where it is on your starting grid.

To win the jackpot on this slot machine, you need to get the best symbol and have it appear 5 times in one round.

You can get additional free spins on this slot machine. To do this, the book symbol must appear at least three times on the same spin. If this is the case, you will be credited with 12 additional free spins.

Our opinion on Book of Sun

Just like many slot machines that use the same mechanics as Book of Sun, the volatility of these machines is often not very high. The base game may be able to pay you from time to time, but it is often the free games that can greatly increase your balance.

However, even with a bonus that can pay you up to 5,000 times your starting bet, Book of Sun is not a recommended slot machine if you want to significantly increase your balance.

Although the graphics are very pleasant for the first few seconds, the low volatility of this slot machine can quickly make it boring.

However, if you are a newcomer to online casinos and are struggling with some slots, Book of Sun can be a very good option to get into the world of slots little by little.