Gameplay modification

Hackers in the are people who play  games using game-altering devices, such as the Action Replay.

Hackers in
Since there is no online play in, hackers cannot do much damage to other players' towns globally, although they can give themselves any item in the game, as well as jump, which allows them to reach normally inaccessible places, including the island without a Game Boy Advance.

Hackers in
Seeds were a major threat to other player's towns in before online play was discontinued. Also, hackers in that game had access to a larger variety of tools and map editors to give themselves large sums of money and items, and a town layout of their choice. Action Replay codes are commonly used in.

Hackers in
Although the seed threat is diminished in, there are still hackers who play the game. Most use ACToolkit to customize the town layout, inventory, etc., and on the whole this works similarly to hacking in. Hackers may give even non-hackers HDLC, which can appear in shops like the Able Sisters.

Hackers in
The 3DS is virtually unhackable, therefore there are very few hackers in.

Abilities
Hackers can perform a variety of things to play around with the game

Here are some of the abilities hackers can do:
 * Retrieve any object, including unobtainable objects.
 * Gain any amount of Bells, in their inventory and savings account.
 * Regrow the grass (in ).
 * Change the layout of their town.
 * Create custom villagers.
 * Create custom objects, and HDLC.
 * Jump, and therefore reach inaccessible areas, such as the top of cliffs.