A package of four amazing NES games!
Super Mario Bros -- originally released with the NES at launch, this classic is still amazing.
Super Mario Bros 2 -- a port of Japan's "Doki Doki Panic", this game was North Americanized to include Mario and his crew. Love this game, especially with the ability to play as Luigi, Toad, or the Princess!
Super Mario Bros 3 -- Still one of the best 8-bit games ever, this game allowed Mario to change his clothes to become a raccoon, a teddy-bear, to turn to stone, or to wear the infamous "shoe".
SMB: The Lost Levels -- not previously released in North America, this game was the Japanese SMB2, but was deemed "too hard" for NA audiences. If you haven't played it, you are missing out.
All the ports are excellent, with clean graphics and crisp play control. All in all, this is an amazing game!