Game's features are:

WILD: Wild symbol substitutes for any symbol except for: FREE SPIN.

WILD FEATURE: Might start at the end of spin in case no any winning combinations on the reels. A random number of any symbols on any reels are replaced with WILD symbols. The feature might also start Free Spins mode.

FREE SPINS: 3 symbols WILD landed on the reel 3 trigger Free Spins mode. The initial number of free spins is equal to the number of WILD symbols landed while triggering Free Spins. During each free spin the same number of WILD symbols placed on the screen as appeared while triggering Free Spins. During each free spin WILD symbols randomly change their positions. During Free Spins new WILD symbols do not land on the reels. Each FREE SPIN symbol adds 1 extra free spin in case lands in any reel.