Hello - this game appears to be "Game Boy Styled". The GBCompo21 Jam is only open to entries which can run on actual Game Boy hardware (delivered in ROM file format).
For that reason I'm going to remove the submission in it's current form from from the jam.
If you'd like to re-make the entry so that it can run on a real game boy (you can test in an accurate emulator, for the most part), you're welcome to re-submit it to the Jam.
Here's a link to the rules:
https://github.com/gbdev/gbcompo21#rules
Thanks for your interest!