I remember the night I found it. It was on a site with a black background and neon green text, the kind that gave your computer three viruses just by loading it. The file name was suspicious: RZ5_Undead_Beta.gba .
There is no official . The official series concluded with Mega Man Zero 4 on the Game Boy Advance, and the story continues chronologically in the Mega Man ZX series. megaman zero 5 rom