The Legend of Zelda: Ocarina of Time - Expansion Disk

About

A ROM hack/mod for The Legend of Zelda: Ocarina of Time which recreates the original design of its cancelled Expansion for the Nintendo 64DD, which was later cancelled and retooled as the Master Quest. It changes the dungeons, changing their layout and puzzles. It was based on the information found within the 2020 Gigaleak.

Source: IGDB