Any restrictions in making an established ip , i.e. demakes/ fan games / what ifs / tribute games [aside from it being non-profit of course]
Also, what about remaking an old game we made with newer assets / graphics?
Welcome to the Jam! Fan games and demakes will be fine as long as you don't reuse assets from your commercial inspiration. Remaking a game you're already made is fine, as long as you port the game to a new platform in the process.
from gameboy to gaamboy color [basically making a "dx" version] should be ok? thanks!
Sure, that would be great! Can't wait to see it.