Default Controls
← → ↑ ↓ = Directions
Z = A, X = B
A = X, S = Y
D = L, C = R
Enter (↵) = Start
Shift = Select
About the Mega Man 4 (USA) Nintendo Entertainment System (NES) Online Game
Hey there! Welcome to play Mega Man 4 (USA) online for free in your browser. Join Mega Man in his quest to stop the nefarious Dr. Cossack and his robot minions. Use Mega Man’s trusty Mega Buster to blast through levels and defeat challenging bosses. Experience classic NES platforming action and save the world from evil. Just click the link, start playing, and have a blast!