Super Mario Bros. (5 Screw) is an iconic action-adventure game for the Nintendo Entertainment System (NES). Released originally in Japan in 1985 by Nintendo, the game follows Mario, a plumber, through the Mushroom Kingdom to rescue Princess Toadstool from antagonist Bowser. The game is known for its side-scrolling levels filled with enemies, obstacles, and power-ups. The '5 Screw' edition refers to the initial, early NES cartridges which were produced with five screws and no top edge clips on the cartridge casing. It's a distinguished version in the collectible market due to its rarity.