This ROM hack by Venom offers yet another fan-made version of Sonic Advance 3 for the Game Boy Advance. The base gameplay would be similar to the original Sonic Advance games developed by Sonic Team, but this release includes modified game elements such as potentially altered levels, new characters, or tweaked mechanics.  This ROM hack is a product of independent development and release by Venom. Its exact details need further investigation into the contents of the ROM itself.

Sonic Advance 3 (U)(Venom)

Sonic Advance 3 - Adv1 Edit