From Nookipedia, the Animal Crossing wiki
(Redirected from Pitfall Seed)
Pitfall seeds, often shortened to just pitfalls, are items in the Animal Crossing series. In the player's inventory, a pitfall seed has the appearance of a white sphere with a large red exclamation point in the center on both sides. A player can bury it, at which point it will look like any other buried item. When a villager or player walks over a buried pitfall seed, they will fall into it. However, special characters such as Tortimer and Joan are "immune" to pitfalls. Any player who falls into a pitfall can get out by rapidly tapping any button. Pitfalls are uncommon in Animal Crossing, but in Wild World, City Folk, and Animal Crossing: New Leaf, they are common. In New Leaf, one pitfall seed spawns per day alongside some fossils.
If the player buries a pitfall seed and a villager falls or gets pushed in, they will appear shocked. If the player speaks to them while they are trapped, they will probably shout and jump out. This will cause them to be in a bad mood after escaping. There is a very rare chance the neighbor will be so mad he or she will decide to leave town. A second use for pitfall seeds are to place them in letters written to neighbors, and in return, they will send the player a present.
There are several ways in which the player can obtain pitfall seeds. They can be found already buried in a town with one or two added every day, along with fossils. In Animal Crossing, pitfall seeds can be found in the Dump, or at the lost and found at the Police Station. In Wild World and City Folk, pitfall seeds can be collected from the lost and found run by Booker at the Town Gate, or found in the recycling bin in the Town Hall.
If the player tries to sell a pitfall seed to Tom Nook, he will treat it as he does trash and will not buy it; instead, he offers to throw it away. However, it can be sold to Re-Tail for a mere 10 Bells. It can also be sold to Timmy and Tommy's store for 8 Bells.
 Tricky Pitfall Seed
Tricky pitfall seeds are items that appear first in Animal Crossing: New Leaf. They can only be found at the Police Station and are very rare. They take the appearance of normal pitfall seeds except the sphere is dark purple and the exclamation point is yellow, similar to fossil's color scheme. They work same way as pitfall seeds, except the 'star mark' left behind is smaller, making them more difficult to see.
 Other appearances
When thrown, they are buried for a short time. If the opponent is in the air and the pitfall seed hits, they are "spiked" (shot directly downward). Or, if thrown and it lands on the ground, it appears to vanish in a series of sparks. When an opponent walks over the place were the pitfall is thrown, he or she will be buried.