Book of Slingo is a hybrid game that melds slot machine mechanics with the excitement of bingo. Players are given 11 spins per round to create winning combinations known as slingos. With each successful slingo, you progress towards the bonus round, unlocking extra features for achieving 8 slingos. The ultimate goal is to fill the board, activating a special expanding feature that can multiply your stake by up to 500 times in a single spin. Additionally, players have the option to trigger the bonus round during the main game, making it a thrilling experience with a return to player (RTP) rate of 96.38%.