FPS is al over the board.

buttons don't give feedback about their state (and the lighthouse one gives no indication of what it's associated with so may not even be functional for all I know).

after glitching myself outside the intended playfield (nice coin by the way) I found that you do no distance culling (no matter how distant an object is you always render it, but Unity provides means to disable the rendering of an object without disabling anything else of the object including collision)

and from the web console:

NullReferenceException: A null value was found where an object instance was required.  UnityLoader.js:4:10703 (countless)

ERROR: 0:64: '[]' : Index expression must be constant  UnityLoader.js:4:10703 (twice)

Note: Creation of internal variant of shader 'Hidden/Internal-GUIRoundedRect' failed.  UnityLoader.js:4:10703 (twice)

WARNING: Shader Unsupported: 'Hidden/Internal-GUIRoundedRect' - Pass '' has no vertex shader
UnityLoader.js:4:10703 (once)