The Legend of Zelda

About

Your own cartridge on EmulatorJS's FCEUmm core. Aldo Núñez's disassembly reassembles Rev 0 byte for byte; Rev 1 plays too, and the battery save stays in your browser.

The Legend of Zelda is the first title in the Zelda series, it has marked the history of video games particularly for it's game mechanics and universe. The player controls Link and must make his way through the forests, graveyards, plains and deserts of the Otherworld to find the secret entrances to the eight dungeons and try to restore the broken Triforce. Among the game's mechanics, it was the first time we saw a continuous world that could be freely explored, power-ups that permanently enhanced the main character's abilities and a battery save feature that allowed players to keep their progress instead of having to start over. The gameplay balanced action sequences with discovery, secrets and exploration.

Description from IGDB.

How it runs

Project

zelda1-disassemblyDecompilation. The original binary turned back into source code, function by function.By Aldo Núñez

Port

andrewnakas.github.ioBy Andrew Nakas · WebAssembly, on the FCEUmm emulatorOnline since Oct 6, 2026Source: andrewnakas/zelda1-web

Controls

Arrows move, X is A (sword), Z is B (item), Enter is Start, Shift is Select.

Plays with

Keyboard. Saves in your browser.

You need

Your ROM: The Legend of Zelda (USA), Rev 0 or Rev 1, .nes. You pick the file in the port, which opens it in your browser.

Original

Nintendo R&D4, 1986, NES