The Legend of Zelda, the first game of the series, was first released in Japan on February 21, 1986, on the Famicom Disk System. A cartridge version, using battery-backed memory, was released in the United States on August 22, 1987, and Europe on November 27, 1987. The game features a "Second Quest", accessible on completing the game, or by registering your name as "ZELDA" when starting a new quest, in which dungeons and item placement are different, and enemies are more difficult for the player to defeat.[48]

The second game, Zelda II: The Adventure of Link, was released for the Famicom Disk System in Japan in January 1987, and for the Nintendo Entertainment System in Europe in November 1988 and North America in December 1988. The game exchanged the top-down perspective for side-scrolling (though the top-down point of view was retained for overworld areas), and introduced RPG elements (such as experience points) not used in The Legend of Zelda. The Legend of Zelda and Zelda II were released in gold-coloured game cartridges instead of the console's regular gray cartridges. Both were re-released in the final years of the Nintendo Entertainment System with gray cartridges.