Illusion

False Wall and False Floors are a recurring theme in the Legend of Zelda series. They are walls and floors that appear to be solid, but are really illusions that Link can pass through. Walls, floors and enemies have also appeared invisible and are usually detected the same way as False Walls.

The Legend of Zelda
False Walls appear only in the Second Quest. They appear as early as Level 2 and are found in nearly every dungeon afterwards. Only a section of the wall bordering a room will be false but the false wall will always be found in the center of the real wall. To pass through false walls in this game Link must walk into them for several seconds before he passes right through.

Zelda II: The Adventure of Link
False Walls and False Floors are a common feature of the later Palaces in this game. The first false wall is found in Ocean Palace. It leads to the Whistle and is guarded by a blue Iron Knuckle. In the Hidden Palace there is a False Floor that must be avoided by jumping over it. It will bring Link to a different section of the palace should he fall through it. The Great Palace features many False Walls and False Floors some of which lead to Magic Containers.

The Legend of Zelda: Ocarina of Time
False Walls and False Floors can be detected using the Lens of Truth. They appear frequently at the Bottom of the Well and in the Shadow Temple, and play a part during one of the trials in the Gerudo Training Ground. This game also features invisible enemies and walls which require the Lens of Truth to locate, the most notable being Bongo Bongo, the boss of the Shadow Temple. The section based on the Shadow Temple found Inside Ganon's Castle features a False Wall at the end and a False Wall hiding a room with several Business Scrubs.

The Legend of Zelda: Majora's Mask
False Walls appear less frequently in this game then in previous games. False Walls and False Floors are prevalent beneath Ikana Graveyard. In Goron Village, sets of invisible blocks lead to the Lone Peak Shrine. With the help of the feathers of Kaepora Gaebora, Link makes it across the crevasse and finds the Lens of Truth inside the shrine, using it to navigate his way back.