Doctor Wily just does not know when to quit! Once again he's created thousands of evil robots, each controlled by a Robot Master and each with a sleek retro casing based on some barrel-scraping theme!
Don't let Wily get away with this travesty of industrial design! Destroy the eight Robot Masters and power up with their distinctive, equally-barrel-scraping weapons! Collect them all!
A new challenge is generated for Mega Man every 5 minutes.