It's neccesary to identify the file we are doing it.
It prevents to confuse us to save the multiple .capx due to control of versions.
Develop games in your browser. Powerful, performant & highly capable.
Yes please! It's not a problem when you name your projects, but would be very useful for quick .capx examples where you don't bother oragnizing too much. Just a mention of the current file name somewhere.