I didn't experience any crashes so that's a good thing! I liked the cog and once I figured out I could hover that was cool and a fun way to use it. I liked the art style a lot!
I played the web version and the clock simply wasn't counting down nor were my hearts being taken. I would turn red over time and die from hits but no hearts were removed.
Cool stuff it kinda reminds me of the stick figure fighters of old. Well done!