This is the original classic Super Mario Bros, but ported to the Game Boy Advance. The screen is zoomed in, which can feel a bit cramped, but it's absolutely worth playing for the portable convenience and the new Challenge Mode. You get the full, timeless platforming adventure right in your pocket.
The gameplay requires the same fast reflexes and precision as the NES version. The unique surprise here is the addition of a world map and the ability to replay any beaten level from a menu, which is great for practice. It's the definitive way to experience this masterpiece on the go.