The prototype features:
As a fan project, it was likely shared on ROM hacking forums (e.g., Romhacking.net, GBAtemp, Reddit r/romhacking). However: shantae advance gba rom 64
If the ROM isn't readily available online, it may be: The prototype features: As a fan project, it
Shantae Advance GBA ROM 64: Echoes of Lost Pixels If the ROM isn't readily available online , it may be: