It simply does not start. Doesn't display any error messages either. It just flashes something looking like the Unity Crash Handler for a frame or 2 and then shuts down.
I'm sorry that most people are not able to experience your hard work. May I suggest next jam you try web export as both an easier way for people to play your game and easier for yourself to debug.
You can still join in the fun by playing and rating other people's games however, and of course I would appreciate it if you try and rate my entry!