gb303GB303 is a wavetable-based TB-303 style synthesizer for the Nintendo Game Boy. There is some compatibility issues and the program is no longer updated. Screenshots. External links. GitHubGB303 is sort-of-a TB-303ish chipmusic cartridge ! Old picture: Features-Three hh quality potentiometers (can be patched to 6 parameters) -Additional drum track with 30 presets-Based on the sound of a real TB-303-Orinal '303