Santastic 4, a 5×4 game, features wilds, walking expanded wilds, re-spins, and Free Spins. Wilds leave frames that can be single, 2-stacked, or 3-stacked. When a reel is filled with frames, it becomes an expanded walking wild, triggering re-spins. Landing 3+ bonus symbols awards 8 Free Spins with carried-over frames from Main Game.
