Play Rockman 4 - Aratanaru Yabou!! (Japan) Online

Rockman 4 - Aratanaru Yabou!! came out for the Nintendo Entertainment System in 1991, developed and published by Capcom. It was the fourth main entry in the series on the NES, arriving at a time when developers were refining the formula of action platformers, adding depth without abandoning the tight controls and level design the console was known for.

You control Mega Man, running, jumping, and shooting through a series of themed stages. Your goal is to defeat eight Robot Masters, acquire their special weapons, and then take down the mysterious Dr. Cossack. The game introduced the ability to charge your standard buster shot, letting you hold down the fire button to unleash a more powerful blast. You also collect new weapons from defeated bosses, like the ability to turn into a small rain cloud or fire a slow moving ring. The pacing is deliberate, with careful enemy placement and platforming challenges that demand precision. It feels like a thoughtful expansion of the series' core action, where mastering your new tools is key to survival.