My favorite Mega Man Zero game. The toned-down difficulty really does wonders, the levels are more distinct and enjoyable to go through instead of being annoying exercises in frustration, most boss fights don't devolve into Don Frye vs Yoshihiro Takayama and have fun patterns to weave through with the cherry on top being the pseudo blue mage mechanic, Zero Knuckle, that's very fun to experiment with. I'm not the biggest Mega Man fan to say the least as I've always found the large majority of those games to be annoying and plain unfun to play, but, save for some frustrating portions in typical Mega Man fashion, Mega Man Zero 4 is a game I enjoy playing and replaying.