This video introduces both the gameplay and the technical details regarding the "impossible space" in "Trespass VR."
THE IMPOSSIBLE SPACE
What is it?
Most VR games do not allow the Player to walk around due to the physical playspace, often a tiny room, is too small. The solution is usually using controllers to teleport the Player around, which can be immersion breaking. "Trespass" solves this issue by shifting the virtual space around when the Player is not noticing. This technique adds more virtual space for the Player to maneuver around that would otherwise be impossible.