Gravity Lab — an interesting sandbox with a first-person view in a sci-fi setting for virtual reality devices HTC Vive, Windows Mixed Reality, Oculus Rift and Valve Index. We invite you to visit the testing center and plunge into the world of interesting experiments based on physical laws. We have prepared a selection of test scenarios for you and we are confident that you will be able to pass them. Additionally, feel free to create your own test cases and share them with other participants.