Your aim is to land 5 matching symbols along a win line. Winning combinations run from left to right across active win lines in the normal game. To win, the symbols must lie next to each other on an active win line without any other symbols coming between them. The ‘Book of Ra’ symbol substitutes all other symbols and can therefore complete a winning combination. And what’s more: land 3 or more ‘Book of Ra’ symbols anywhere on the reels to trigger 10 Free Spins.