I tried to play the game with Firefox and Chrome, on Windows and Ubuntu... Finally I opened the web console and saw this error:
"./main: can't open file '//main.py': [Errno 44] No such file or directory" <== the two forward slashes ("//") at the beginning mean that the path is not set up correctly.
Ah, it's sad that there are technical issues.
I'm curious to play this game - please update after the jam.
Good luck!