Remakes

Nintendo has a long history of remaking its popular Legend of Zelda series, particularly to release them to handheld systems.

The Legend of Zelda (NES- Japan only)

 * The game was remade using enhanced graphics

The Legend of Zelda: Link's Awakening DX (Game Boy Color)

 * The game is now in color
 * A new dungeon was added, strongly emphasizing color
 * The game now has a photo album
 * All photos taken can be printed as stickers using the Game Boy Printer
 * When played on the Super Game Boy, a special border will be displayed

The Legend of Zelda: Ocarina of Time Master Quest (GameCube)

 * The dungeons have been redesigned

The Legend of Zelda: A Link to the Past (Game Boy Advance)

 * Music and sound effects from newer Legend of Zelda games were added, especially Link's voice effects from Ocarina of Time
 * The game can be saved at any time
 * The game can be resumed from the saved location
 * The Triforce introduction can be skipped
 * The title screen now has a "press start" prompt

The Legend of Zelda: Ocarina of Time (Nintendo 3DS)

 * The graphics were enhanced
 * Various locations were altered
 * The game was remade in stereoscopic 3D
 * The dialogue was changed to account for the new system
 * Various other dialogue was changed or corrected
 * The game was changed to better assist new players
 * Various challenges and minigames were changed to account for the new system
 * The music is now in surround sound
 * The music in the Lost Woods no longer varies in volume
 * The menus are now found on the touchscreen, no longer requiring the game to be paused in order to use them
 * The ocarina songs can now be read while playing the ocarina
 * A major improvement was that the iron boots were changed from equipment to an item, making them easier to take on and off in the water temple
 * The ocarina now has its own default menu location, and up to four items can be equipped.
 * Various dungeons have been redesigned to make them somewhat less confusing

The Legend of Zelda: The Four Swords (DSiWare)

 * A single player mode was added, with puzzles and dialogue accounting for it
 * However, only two Links can be used in single player
 * New stages were added as unlockables after the main quest is completed, and are based on past Zelda games
 * Instead of using link cables, the game now uses the DSi's wireless connection for multiplayer