The 'Book of Ra' substitutes all symbols except for the Bonus symbol and will give you the odd winning combination. You can view the prize ranges for each winning combination in the paytable.
Your goal is to land five matching consecutive symbols along a win line, starting on the left. Treasure hunting with the ancient pharaohs: Book of Ra™ takes you directly into the royal burial chambers! Your adventure starts on 5 reels and 9 win lines, and with some luck the right combinations will lead you directly into the bonus games! Bring the mysterious signs in the right order and unimaginable riches will be yours!