Top definition
A phenomenon in which a video game, movie, or other piece of media that was never intended to be perfect gets hyped up as such by its fan community, causing those diving in to have far too lofty expectations. This is followed first by disappointment when it fails to be perfect, then by backlash against the fans who hyped it up - and, inevitably, the game itself. This results in a cycle where the "fans" and "haters" become distinct groups who get increasingly vocal and vicious with each other, debates over its contents become less rational and more personal, until eventually all legitimate discussion about the original subject becomes impossible.

Popularized by the 2015 video game Undertale, as of this writing it is still extremely difficult to bring up the game in any context without getting attacked - either by diehard fans who refuse to recognize that the game has flaws, or diehard haters who refuse to recognize that the game has strengths.
I once brought up Undertale in a conversation. I got told to kill myself, and then the conversation veered off-course into bickering between the fans and the haters. That's the Undertale effect for you.
by JonBon3311 December 19, 2016
Get the mug
Get a Undertale effect mug for your daughter Yasemin.
2
When a video game becomes popularly hated due to its fandom as opposed to the game itself. Part of cringe culture. Often results in a hatewagon.
"Let's play Fortnite!"
"Eugh, why Fortnite? That game sucks. The community is filled with whining kids."
"Didn't you have the same reaction to Undertale? It was a good game but the community ruined it? Isn't most Fortnite hate just another Undertale effect?"
via giphy
by JTIG22 August 30, 2018
Get the mug
Get a Undertale Effect mug for your barber Sarah.