Thanks for your answer. And how about a SGB game that would use SGB only features? (like colors, SNES sounds, multiplayer, etc.)
There is some untapped potential in this accessory IMHO, as most commercial SGB games didn't rely on the SGB-only features to be able to work on a GB too. But I've been tempted to make "SGB-only" game for quite some time, that compo would be a good opportunity to finally try my hand at such a project if it's not against the rules?