Super Mario Bros.

Super Mario Bros. is an NES game in and, and is one of the "Forbidden Four", along with Ice Climber, Mario Bros., and The Legend of Zelda. The game was released on the NES as a successor to the 1983 arcade game, Mario Bros., and as the first game in the Super Mario series of platformers. In the game, the player plays as the protagonist Mario as he travels through various worlds, defeating Goombas, Koopas, and various other enemies as he goes. The ultimate objective is to defeat Bowser in World 8 to rescue Princess Toadstool.

How to obtain
There is currently no legitimate means of obtaining Super Mario Bros. in. The game was given out in a giveaway set up by the Japanese magazine Famitsu. Cheating the item into the player's inventory using a Action Replay, or a similar device is the only option currently, unless they buy a memory card with the NES game already obtained in an Animal Crossing file.