So for mac, the Unity player gives the option to change keybinds upon launch.
I began to enter my preferred bindings, and then I noticed that the listings only have 2 of the 4 movement directions, meaning I can't complete the keybinds. I tried to revert, but there's no button for that. I tried reinstalling - it still has the messed up layout. Where are these prefs stored so I can trash them? I found something in Application Support but it wasn't it.