Want a cute af platformer that's not too hard? Well, Kirby's Dreamland is a great place to start. It's a cute game where even on your first time around, you won't have much trouble beating it as it's a pretty slow pace and Kirby himself is pretty capable of gaining height for a platformer character. That's probably the most unique aspect that started here. You didn't need to worry about jump height and distance, since Kirby was able to float and flap as much as the player desired.

Anyway, cool and cute game. Not amazing by any means, but it's a humble beginning to what would be a significant Nintendo franchise.