The most infamous of these is undoubtedly Eggnog's hidden character FWAK for Final Fantasy VI. Some games have so many rumors that they can result in the creation of a "FWAK", a parody/troll walkthrough containing intentionally fake "secrets".
Sometimes, the game's creators will include a character or a feature in a sequel because of these rumors. As such, a lot of these old rumors tend to come from the sixth generation, and tend to be increasingly more common the further back one goes. Even still, before internet connectivity became common and the mobile internet took off, they could sometimes gain at least some steam before the facts came out. Even if no one bothers to do that, the mere existence of the internet, and the pervasiveness of fact checking it provides quickly vaporizes most rumors before they take off anyway. These days, this has been becoming more and more a thing of the past, thanks to advancements in cracking physical copies of games to dump their ROMs online and allowing people to look through the game's code becoming easier and quicker with each generation. This, of course, makes the rumor harder to verify and contributes to its longevity. Many of these rumors feature fake secrets, which can supposedly be unlocked only by pulling off some ridiculously difficult feat (or doing something very time-consuming). The Internet doesn't help either while it's quick to debunk rumors, it's also very good at generating them. After all, if it's in print, it must be true! Other sources include mistranslated lines, aspects of the game being Dummied Out, and Missing Secrets.
But the rumor persists in spite of all the evidence against it.Ī common source of these is April Fools' issues of popular gaming magazines. It's not hard to believe them, since the games often have real secrets and glitches that are so bizarre that they sound made-up. Every popular game has a rumor around it that is capable of turning it into a urban legend, and due to an oversight or hanging plot thread, it just seems plausible.