Easter egg

Easter eggs are hidden parts of a game or software that are usually discovered by more experienced players. There have been a number of Easter eggs throughout the Pokémon franchise. In the , there are several items, locations, and events that are considered by some to be Easter eggs.
Note that this page is not a complete list of everything that could be considered an easter egg. There are far too many such things in the series to count, and what could be considered one is entirely up to personal opinion. This page simply lists some of the more notable things that could be considered as such.
==In the core series games==
===Truck===
In Pokémon , as well as their remakes , and , there is a truck which appears in the S.S. Anne's port, which serves no evident purpose except as scenery. It is not seen in regular gameplay, as it requires the player to use before the player obtains the HM for it and has the Soul Badge to make the field move usable. The map in which the truck is located is only normally accessible before the player can obtain but is no longer accessible after the player receives and the S.S. Anne departs. There are a number of ways around this problem. One is trading a Pokémon that knows Cut into the game, thus making the initial trip to the S.S. Anne for unnecessary. Another involves getting the HM from the ship's Captain then battling a Trainer and losing. This leads to the player blacking out and running to the Pokémon Center without the ship leaving. Another method is to simply skip the S.S. Anne and Vermillion Gym and return once Surf and the Soul Badge have been obtained. With scenery being very sparse in the Generation I games, and this being one of the few sprites with no other purpose than to exist in one spot, fans began speculating that another purpose existed for this truck, and that it could perhaps be moved with . Thus, a popular rumor sprang up that a Poké Ball containing could be found underneath, but was proven false.
In the Generation III remakes of Red and Blue, the truck is still present. On its pier, if the player walks down a bit, they can find a hidden Lava Cookie, unavailable until later in the game at the Sevii Islands. However, the method of blacking out and returning was not included, with the ship simply departing upon the player's re-entry if attempted. In Generation VII, a Revive that respawns daily can be found at the same location, though the port is combined into Vermilion City in these games and therefore can be picked up at any time once their has learned Sea Skim.
===Diamond dust===
Diamond dust (Japanese: ダイヤモンドダスト diamond dust) is a special variation of that has appeared in select locations and at select times in core series games since Generation IV. Diamond dust has no effect in battle, but since it replaces the usual weather, it allows one to battle without in areas where there is usually , such as Mt. Silver Cave's peak for the battle against Red.
On January 10, 2008, Director Junichi Masuda announced on his blog that fans should play on January 12, his birthday, for a surprise. The surprise was discovered to be sparkling diamond dust falling in Snowpoint City instead of the normal, light snow.
Below are the known dates and locations that diamond dust occurs in the Pokémon games. In Pokémon Scarlet and Violet, diamond dust can also be randomly encountered outside of specified dates. 
Date 	Event 	Game 	Location
January 12 	Junichi Masuda's birthday 	 	Snowpoint City
February 27 	Release of Pokémon Day 	 	Snowpoint City
February 29 	 	 	Snowpoint City
February 29 	 	 	Mt. Silver Cave
March 15 	 	 	Snowpoint City
March 15 	 	 	Mt. Silver Cave
March 31 	Discovery of Mew 	 	Snowpoint City
April 22 	Release of in North America 	 	Snowpoint City
May 1 	Release of in North America/	 	Snowpoint City
September 2 	(United States) 	 	Snowpoint City
September 20 	Sarah Natochenny's birthday 	 	Snowpoint City
October 10 	Retail release of in Japan 	 	Mt. Silver Cave
October 30 	Release of in the US 	 	Snowpoint City
November 19 	Release of 	 	Snowpoint City
December 31 	rowspan="3" 	 	Mt. Silver Cave
December 31 	 	Icirrus City 	
December 31 	 	Glaseado Mountain	
Player's birthday	Player's birthday 	 	
Frost Cavern
Player's birthday	Player's birthday 	 	Mount Lanakila
Player's birthday	Player's birthday 	 	Glaseado Mountain
===Secret wallpaper===
In , , and , there are secret wallpapers for the Pokémon Storage System that can only be unlocked via outside resources. A special phrase must be entered in-game to unlock these wallpapers, with the phrase depending on the player's ID number. Online generators at places like Filb.de can be used to obtain these phrases.
In Pokémon Emerald, the player may speak to the father of a sick girl named Walda in Rustboro City to obtain a "Friends" wallpaper by telling him a word that will make Walda laugh. It is possible to unlock a variety of wallpapers, with different combinations of background and patterns and colors, by telling the father different words, but only one Friends wallpaper may be unlocked at a time.
In the Generation IV games, eight wallpapers can be unlocked. Unlike in Emerald, all eight wallpapers can be unlocked at the same time, each requiring its own unique phrase. These wallpapers differ between the Diamond and Pearl, Platinum, and HeartGold and SoulSilver games. In Diamond, Pearl, and Platinum, the player may speak to a TV producer at Jubilife TV to unlock the wallpapers. In HeartGold and SoulSilver, the player may speak to Primo in the Violet City Pokémon Center to unlock them.
==In the side series games ==
In Pokémon Stadium and , when the player uses the from a connected game of , this Pikachu is voiced by Ikue Otani and has unique sound effects. Similarly, if a Pikachu or that knows is used, it will have a unique attack animation. This animation also occurs in and .
==In the spin-off games==
===Super Smash Bros.===
An Easter egg can be found in Super Smash Bros. Brawl while the player is playing in the stage when the stage is in Ice Mode. If the player angles the camera and looks through the window of the cabin that Snorunt is in, a poster of a pet cat can be seen on the wall. The cat was rumored to belong to the game's director, Masahiro Sakurai, but he later stated that this was false.https://twitter.com/Sora_Sakurai/status/509401397733761025
===Pokémon Play It!===
In Pokémon Play It!, only two decks are normally available: the and the . If the player types "FIRE", two additional decks become available as well: the and the . The additional decks are simply unlocked with no feedback or confirmation. From this point onward, they appear at the list of available decks whenever the player starts a new game. However, when the player closes the game application or accesses the "Extra" option (which also closes the game application and opens a separate application), the additional decks become unavailable as before. Whenever the player opens the game, they will have to type "FIRE" if they wish to use the additional decks.
Specifically, this shortcut works at any point during the main game, at the main menu or any the "Learn" options; it does not work during the initial cinematics or if the player chooses the "Extra" option (which closes the game as stated above). If the player types "FIRE" when the list of available decks is displayed with only the two initial decks, the code works as usual but the list of decks will not be updated until the player starts a new game (without closing the game application).
==Peripherals ==
Within the coding of the Mobile Trainer cartridge (the main Game Pak packaged with the Mobile Game Boy Adapter) is a reference to an alleged 'game' called "Pokémon Moss" (Japanese: ポケットモンスター苔). The same reading with different kanji (虚仮) can also be interpreted as "Pokémon Fool", hence it is possible this was simply a joke by the developers to trick the fanbase.Háčky (Glitch City Laboratories Forums)
==References==
Category:Game mechanics
it:Easter egg