This game will be available, as soon as you win special symbol (Airship Free Games) in Lost City Adventure Bonus. Three Airship Free Games symbols on reels 1-3-5 simultaneously trigger the 5 Free Spins and 1 Super Spin.
During free spins you will collect the wild symbols under 'Collected Wilds'. These symbols will be involved in Super Spin as sticky wild symbols somewhere on the reels 2-3-4.
More free spins cannot be retriggered during Free Games.