Rocks are objects that have appeared in every Animal Crossing series game. There are usually five to ten rocks in a player's town, and the rocks can be a single rock or be in clumps of two. Depending on the season, hitting a rock with a Shovel or Axe may result in a Pill Bug, Centipede or House Centipede appearing; this is the only way of finding them. In winter, there is snow on them, but the other seasons do not change anything in the rocks.
Once a day, one of the rocks in town hold Bells inside of it. To get the Bells, the player has to go around their town and hit random rocks with an axe or shovel. In about five seconds, the player must hit the rock as many times as possible.
In Animal Crossing, the rock will release up to 23,300 Bells as three sacks of 100, three sacks of 1,000, and two sacks of 10,000; in Animal Crossing: Wild World, the rock will release up to 8,500 Bells as sacks of 100, 200, 400, 800, 1,000, 2,000, 4,000; and in Animal Crossing: City Folk, Animal Crossing: New Leaf, and Animal Crossing: New Horizons, the rock will spurt out up to 16,100 Bells as sacks of 100, 200, 300, 500, 1,000, 2,000, 4,000, and finally 8,000. Additionally in New Leaf, if the player is wearing the Daily Lucky Item on a good money luck day, the rock will release more money with each sack containing twice as many Bells as normal. Conversely, if the player is not wearing the Daily Lucky Item on a bad money luck day, the rock will release less money with an extra 100 sack at the start that causes the last 8,000 Bell sack to not spawn.
In New Leaf
In Animal Crossing: New Leaf, in addition to money rocks, players are able to destroy "fake" rocks to produce ores. These can be given to Cyrus at Re-Tail to dye items (mainly furniture) different colors.
If the player strikes a money rock with a Silver Shovel, it may produce ores instead of Bells.
In the Animal Crossing: New Leaf - Welcome amiibo update, the ability for the player to sit on rocks was added.
In New Horizons
In Animal Crossing: New Horizons, a total of six rocks appear on the player's island, and all rocks except the money rock now release Stone, Clay, Iron Nuggets, and Gold Nuggets when hit, which can be used in various DIY recipes. Additionally, rocks can be broken if they are hit with an Axe or Shovel after the player eats fruit or Turnips, after which they will reappear in a random location the following day.