The third game in the Megaman Zero subseries takes place two months after its predecessor.
It features mostly the same gameplay as its predecessors, but with a different Cyber Elf system and customizable armor. Also new are the Secret Disks, which can be analyzed for information about the series, enemies, items, and the characters.
This run ignores all the unnecessary ones.
Aside from the usual links, there are mirrors of this run available in low quality (78 MB) and high quality (1.0 GB) at the Internet Archive.