Mega Man V stands out as the pinnacle of the classic Mega Man series on the Game Boy. It features unique bosses (the Stardroids!), creative level design with a spacefaring theme, and introduces new gameplay mechanics like the Mega Arm. The difficulty is well-balanced, offering a fair challenge without being overly frustrating. If you're a fan of retro Mega Man, Mega Man V is a must-play that provides a surprisingly fresh and engaging experience within the constraints of the handheld.