Book of Sol

10 fixed paylines, left to right. The Eye and Book substitute for regular symbols. Three, four or five-plus Books award 10, 15 or 20 free spins. A regular expanding symbol is selected once when the feature starts. If that symbol lands on at least three different reels, it fills those reels and pays on all ten lines, even when the occupied reels are not adjacent. On such a spin, regular line wins exclude the selected symbol so that it is not counted twice. Three or more Books during the feature add 5 spins, up to 30 awarded spins in total. Bonus Buy costs 100× bet for 10 free spins.

Virtual coins only. No coin purchases, cash prizes or withdrawals.