I made the first ever test cartridge for the Gameboy Color. (That's quite an achievement in and of itself, quite frankly.)
I have 5 for sale right now and will have more coming soon, hopefully within the week:
https://www.etsy.com/listing/988193486/jayros-gameboy-test-cartridge-for
This is what you get (Click for bigger):
View attachment 258651
I have 5 for sale right now and will have more coming soon, hopefully within the week:
https://www.etsy.com/listing/988193486/jayros-gameboy-test-cartridge-for
This is what you get (Click for bigger):
View attachment 258651