Book of Kingdoms®

Book of Kingdoms® borrows a book-slot name and a medieval look, with crowns, castles and a royal tome, but it plays differently from a classic expanding-symbol book game. It is a reel-and-pay-line slot whose headline feature is a Money Respin round, much like a Hold & Spin game.

When enough coin-style money symbols land at once, the respins begin. The coins lock in place and the respin counter resets each time another coin arrives. When the counter runs out, the collected values are paid. In the base game, the book symbol acts as a wild, which helps build regular wins between features.

It may suit players who enjoy respin features and a steadier rhythm. The published RTP is 96.69%. The free demo uses play credits, no real money is involved, and every result is random.