Rock
Rocks are found in virtually every Zelda game. The term "rock" or "stone" is generally reserved for such an object that acts as an obstacle, or can be destroyed to find Recovery Hearts, Rupees, or other spare items like arrows and bombs. They can be removed in a number of ways, depending on the game, such as picking them up and throwing them, breaking them with a hammer or blowing them up with a bomb. If a rock is thrown, it can damage enemies.
Characteristics
In The Legend of Zelda, Link can only push certain rocks, and only after he has obtained the Power Bracelet. The boulders that fall off of Death Mountain are occasionally classified as Rocks.
In The Adventure of Link, Link can destroy boulders in his path after he has obtained the Glove. Due to the game's graphic limitations, the Glove may have been intended to allow Link to cinematic ally lift and throw pillars out of the way as he does in a later game, Ocarina of Time.
In A Link to the Past, most rocks are denoted by a green color. In the Dark World, rocks are skull-shaped, and may occasionally turn out to be Stals. Though Link can't initially pick up or destroy rocks, the Power Glove enables him to carry lightweight rocks, and the Titan's Mitt allows him to lift and throw rocks even larger than himself. Throwing a rock at an enemy will heavily damage it, usually resulting in an instant-kill. The most common rocks can be destroyed with the Magic Hammer as well. Link can eradicate piles of rocks by charging into them with the Pegasus Boots.
In Link's Awakening, there's only one type of rock. Link can lift and throw these once he has the Power Bracelet.
In Ocarina of Time, as a child, certain small rocks can only be picked up after having obtained the Goron Bracelet. When Link is an adult, these small rocks can be picked up without it. Also when he is an adult,certain boulders and pillar-like rocks can be picked up thrown in a similar fashion with the Silver and Golden Gauntlets. Though even with these aids, it is clear heavier objects are still more strenuous to lift and throw. Some rocks can also, or only, be destroyed with the use of Bombs, Bombchu, or the Megaton Hammer.
In Majora's Mask, the small rocks return from Ocarina of Time, and Link can lift them without aid. "Bomb-able" rocks return as well, but larger boulder-size rocks can no longer be lifted at any point in the game.
In Oracle of Seasons, Oracle of Ages, and later in The Minish Cap, the same type of rocks return from Link's Awakening, and they can only be lifted with the Power Bracelet.
Though Link can lift and throw pots and other common objects in The Wind Waker, lift-able rocks are very uncommon, especially in comparison to previous games. The only handful that can be lifted are the Stone Head rocks, which are very distinct in appearance, and can only be lifted after the Power Bracelets are obtained. Bomb-able rocks appear as well, but once again, are much rarer than in previous games.
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In Four Swords Adventures, some rocks surround Stone Arrghus, the boss of Eastern Temple. The Minish Cap, some Puzzles involves Link pushing rock similar in appearance to that of Four Swords Adventures.
In Twilight Princess, rocks can be destroyed with the explosions from one or two bombs.
In Phantom Hourglass, rocks can be destroyed with Bombs or the Hammer, but cannot be lifted.