If you've ever wondered how an engine goes together, or just want to waste some time assembling one (around 60 minutes), then give this a try - may interest somebody. It has a free demo for Rift users. http://www.wrenchgame.com/2018/11/09/free-wrench-demo-for-oculus-rift/ (you can install the demo from the Oculus Rift Store) Early access is on steam Youtube video of it