Is it possible to add a hertzodash fan game?

I don't know what that is, but if you have a Geometry Dash fangame you want us to add, you can submit it here: https://docs.google.com/forms/d/e/1FAIpQLScuMTGMtitBrL24t3bM3qqyVqR0PSVIVBDpNtCuVs9uzojPdw/viewform

yes, okay

Oh, ops, does it say here that you can't scratch projects? Damn, how sad(

Yes. No Scratch games.