Mega Man 4 - Progress Modifier Action Replay Codes (USA)

This page contains the Action Replay codes that I have available for Mega Man 4 (USA), a game for the original NES (Nintendo Entertainment System). If you're playing on an emulator, you'll typically be able to put these codes into the program through a built in option. Anyone who is really old school and playing on a physical console will have to purchase a physical Action Replay device to use these codes.

When it comes to emulation for the NES you have 3 good options to choose from. You can do RetroArch, Nestopia or MesenCE, follow the links provided to learn more about how to use the codes you find on this page on the Emulator of your choice. If you don't see the code you want on this page, I recommend you return to my Mega Man 4 Guides Index and choose a different section.

 

Progress Modifier: 00A9:??

Have Ring Man, Pharaoh Man, Bright Man, and Toad Man Defeated: 00A9:1B

Have Pharaoh Man, Toad Man, Bright Man, and Dust Man Defeated: 00A9:2B

Have Ring Man, Pharaoh Man, Toad Man, Bright Man, and Dust Man Defeated: 00A9:3B

Have Dive Man, Pharaoh Man, Toad Man, and Bright Man Defeated: 00A9:4B

Have Dive Man, Pharoah Man, Toad Man, Bright Man, and Dust Man Defeated: 00A9:6B

Have Skull Man, Bright Man, Pharaoh Man, Toad Man, and Dust Man Defeated: 00A9:AB

Have Only Drill Man and Dust Man Undefeated: 00A9:DB

At Dr. Cossack: 00A9:FF