The Half Dome Zero user study, conducted in 2017, involved spending 30 minutes in VR, spread across three experiences: a modified version of First Contact that involved interacting with nearby objects, a modified scene from Dreamdeck in which participants had to search for a small symbol, and a task that involved looking at random dot stereograms and assessing how quickly participants could understand 3D patterns in the scene (note: the patterns are only visible in VR).