I don't think it is the source code that the jurisdiction has problem with; I think it is the fact that he is offering a hosted service to play this in an emula

I don't think it is the source code that the jurisdiction has problem with; I think it is the fact that he is offering a hosted service to play this in an emulation/js implementation. In my narrow opinion, anyone could share the source code that they wrote and playing off our own browser does not violating copyright and is entirely altruistic.