I'd heard about this incident but I didn't realize there was footage of it. During Oculus Rift's 4D Game of Thrones Experience at SXSW, Maisie Williams (Arya Stark), who is afraid of heights, starts panicking a bit and quickly pulls the Oculus off her face. The virtual Wall is augmented with actual sensory information like cold blowing air and an elevator shaft that vibrates and has a moving floor.