Little Mac is iconic for a reason, but Punch-Out!! is also where Nintendo began experimenting with different techniques and ability in graphics. Which leads pretty much right into…
15) Super Mario Bros. 3
It’s hard for an 8-bit game to keep its graphical swagger, but this game pulls it off. As the ultimate refinement in 2D platforming, it’s also a game that’s clear even at sharper and sharper resolutions… not necessarily easy for old games.