Apologies for the rocky start some folks had, but we just pushed out an update for those of you who were crashing when trying to start the game from the main menu. Seemed to be caused by using Vive while having an XBox controller connected, how odd! We hope you can all get into the game and enjoy now! Contact us with any other issues you find.
Also, we fixed some of our app's flags - it now properly appears in your "VR" games list and can be launched from SteamVR.
Have fun!