Remakes

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

BS: The Legend of Zelda: Ancient Stone Tablets (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 game's color palette cannot be retained, however.

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

 * The dungeons have been reorganized.
 * Various puzzles have been altered.

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

 * Music and sound effects from newer The 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 3D (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 Anniversary Edition (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.