About
Mega Man 4 is Capcom's 1991 NES platformer, the fourth game in the original Mega Man series. A disassembly of the US PRG0 release of Mega Man 4 for the NESASM assembler, which rebuilds a byte-for-byte identical ROM. The author calls it extremely far along but not 100% complete, and has no plans to finish the gaps or document it in depth.
How it differs from the original
This is a disassembly, not a new game: it rebuilds the original ROM exactly and adds no new content.
Getting started
Assemble it with NESASM by running it on the main assembly file.
History
Work began in 2015 as a follow-up to the author's 3Mix project but was set aside. The author published it years later after rediscovering it. Using the PRG0 revision rather than PRG1 was an accident.
Known limitations
- completeness: Disassembly is extremely progressed but not 100% complete; some gaps remain in the code documentation.