7's can turn to triple 7's allowing up to 15 in a row. Other symbols can turn to doubles allowing up to 10 in a row. The above occurs randomly on each spin. Wilds and double Wilds do not pay and occur only on Reels 1,2,4 and 5. Event Trigger: 6 free games awarded for 3 or more Wilds left to right; 12 free games awarded for 3 or more Wilds left to right AND right to left. Symbols in winning combinations lock for the remainder of free games. A maximum of 14 symbols can lock during free games.