Mario vs. Big Bertha, from Nintendo Power’s Super Mario Bros. 3 strategy guide

Donkey Kong Country on the cover of Nintendo Power

Peach and the Shadow Queen, via a Mario manga
Flyer/box art for Famicom Grand Prix II: 3D Hot Rally
As you can see in the small logo at the bottom this game was one of the few titles with Famicom 3D System support.

Hot Foot gives Mario a hot butt.
If you’ve ever felt nostalgic for the age of LCD-screen video gaming, what with all the clicks and harsh beeps, then you should take a look at Pica-Pic, an awesome collection of old titles that are playable in your browser. They have Game & Watch classics — Donkey Kong, Octopus, even Zelda — but also rarer, non-Nintendo titles, such as this Bartman game.