Glitch City is a term used by fans to refer to a city caused by a bug that occurs in the Pokémon video game Red, Blue and Yellow versions by doing (in order) the following:
The player should bring a Pokémon that knows Fly and a Pokemon that knows Surf.
He or she should go into the Safari Zone and then go back out through the same door.
When asked, "Leaving early?" the player should say no.
After being sent back into the Safari Zone, the player should save the game, shut it off, and turn it back on.
The player should leave the Safari Zone again, and the player will be asked if he or she wants to enter the Safari Zone and pay $500, even though he or she is already in there. The player should say no.
The player will be sent back into Fuchsia City. Once the player is in Fuchsia City he or she should use a Pokémon to Fly to Cinnabar Island.
The player should then go to the east (right) coast, and Surf up and down with a Pokemon that knows surf. The player will run into Pokémon that are usually seen in the Safari Zone. Surf until an announcement comes up that reads "Ding-Dong!". (This takes about 7 minutes.)
The player will be sent to the Safari building. When he or she leaves the building, he or she will be in Glitch City.
1 Facts about Glitch City
The only way out of Glitch City is to fly out, so if one saves the game, he or she should make sure there's a Pokémon that can fly out.
There is more than one Glitch City, and one can find them by going somewhere other than Cinnabar (like Cycling Road or Victory Road). However, the Glitch City accessed through the Cinnabar Coast is the only form of Glitch City that contains open space that the player can walk around in. In most other Glitch Cities, the player will be surrounded by glitch and unable to walk around.
As a precaution, players going to Glitch City should never save the game in Glitch City, even if they have a Pokémon that can fly out. (For example if you save the game in Glitch City and you realize you don't have a Pokémon that can fly out you will be stuck in Glitch City permanently.)
When a player uses his or her map in Glitch City, it will say he or she is in the Sea Route 20. However, Glitch City looks nothing like the Sea Route 20.
The most common Pokémon found in the Glitch City accesed through the Cinnabar coast are Tentacool. A player can also fish for Pokémon in this Glitch City.
Going too far to the left or right will often get the player stuck in an invisible wall. If one presses Start, often the graphics and pixels of the city will change briefly.
Although similar, there doesn't seem to be a connection with the Missingno. glitch, other than the fact that Missingno. and the most obtainable Glitch City can be found off the coast of Cinnabar.
The music in the Glitch City accessed through the Cinnabar Coast is the same music theme as the one played in route.
In Glitch City, pixels and graphics from different parts of the game are mixed up (see picture). The land and water can also be mixed up so sometimes it appears that the player is standing on water or surfing on land. This is usually caused by using a fishing rod or pausing the game (which causes parts of Glitch City to change). If the whole city turns to water (which is sometimes possible), the player can keep surfing forever until the player gets stuck or the game automatically shuts off. (However, a player should not surf for long distances while in Glitch City, because it can corrupt a player's game.)
The Safari Zone was not included in the Gold, Silver and Crystal versions, and since the Safari Zone is needed to complete this glitch, it is impossible to do it in these 3 versions. It is believed that the Safari Zone wasn't included in the Gold, Silver and Crystal games because of Glitch City's presence, although there is still remaining code and a map of Safari Zone in the three games. In Pokémon Ruby and Sapphire one must exit the Safari Zone by using the start menu and selecting retire and you cannot return to the safari zone lobby while using the safari zone. This was most likely done to prevent a Glitch City type glitch in Ruby and Sapphire.In Fire Red and Leaf Green you cannot? save your game in the safari zone, therefore you cannot access glitch city in FR/LG.
Glitch City is also sometimes called "Sunny Town" by fans. (There's no city named Sunny Town in the games.)
If a player goes to Cycling Road instead of the Cinnabar Coast to do the Glitch City trick, they will go to a Glitch City where they are always automatically walking downward. This is because normally the bicycle the player is on in Cycling Road automatically goes downward.
