Mega Man 9 is a side-scrolling action-platformer that revives the classic gameplay of the original Mega Man series. Players control Mega Man as he battles against the evil scientist Dr. Wily and his robotic creations. The game features 8 stages, each with its unique theme, enemies, and boss. The game's graphics and sound design deliberately emulated the 8-bit and 16-bit era, making it a nostalgic treat for retro gaming enthusiasts.