I'm sorry, but the source code isn't in the zip file, actually, this was the way I found to offer it for free while also providing a version for anyone who wanted to play on actual hardware. It took me quite a bit of time to make, but it's still free, and you can play it in your browser without any issues. It was the first game I really put a lot of work into, which is why I wanted to leave it like that. There's also the fact that I no longer have the original game file, I ended up losing it when I switched PCs.