The free games start with at least three scatter symbols. You then get twelve free spins in which the chicken pharaoh symbol has a special function to upgrade symbols.
With each Pharaoh symbol, the medium paying symbols will be upgraded to the next higher one, and the lower symbol will no longer appear in the free spins.
The lower value symbols A, K, Q and J can still appear, but there will be fewer different medium-payout symbols. The free spins can also be extended with the Pharaoh symbol.