Mega Man Battle Network 4: Red Sun / Blue Moon is a role-playing game developed by Capcom and released on Game Boy Advance.
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Cheats
There is a large hole surrounded by purple slime on a platform in Ura Internet area 6 In order to approach it you need the chips Bug Curse Muramasa Blade Black Wing Element Dark and Poison Anubis Once you get close enough it will suck you down to the secret dungeon Black Earth
