If you keep pressing keys then it changes the glass.

Excellent work, very impressive.

Here is how to cheat, not that anyone ever would:

• Open Developer console
• Find breath definition
• Change these numbers to bigger numbers

  if (breath < 8000) {
    breath += 2000;
  }

Pause and resume

Since its written in javascript, you really can't prevent people from doing this. An obfuscator would help, but isn't worth the trouble.

Amazing work, wow! I do not want to create extra work for you or be presumptuous or claim to really know what I'm talking about. . .but since I ❤️❤️❤️ the world of open source this might be a nice moment to learn about open source practices and explicitly include a software license that lets people know what they can / cannot do with your code. I might suggest the MIT License for the source code and a "creative commons non-commercial" for your designs/sounds. This would allow anyone to repurpose the code (even make a similar game that they could sell). But for the design assets you might prefer someone not be able to re-use and sell them (like make a t-shirt with the images without your permission)?

This is a really helpful website:
https://choosealicense.com/

And more about Creative Commons:
https://creativecommons.org/choose/

Happy to help walk you through / update your GitHub repo!

🚂 🌈 💫❤️

There's some parts in your code, that allocate memory without cleaning it.

8GB of ram used.

Thanks for your game and your videos :D

had to convert it to a gif thanks to github