Undertale Effect

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?"
by JTIG22 August 30, 2018
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Undertale Community

The perfect place to find all your favorite Undertale characters making out.
Did you see that great Toriel X Sans image in the Undertale Community? No, I only saw the "You're gonna have a bad time meme.
by pppom May 5, 2016
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Undertale Multiplayer

A cool Undertale FanGame which has a Discord server where you ask for the game and get banned.
Guy: Hey, when is the Undertale Multiplayer coming out?
Mod: get banned lol
by EDolphin March 2, 2021
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Commit a undertale

Basically jumping off of a ledge to your death
I swear if Sans gets into smash, I will commit a undertale
by WilliamXu210 August 29, 2022
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Sans undertale

A skeleton based character from the indie video game Undertale, developed by Toby Fox, that is apparently a meme.
“Sans undertale is highly popular amongst many Undertale fan girls”
by Kioki Isumie July 12, 2019
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undertale 2

very cool itch.io gqme that i recommend playing (pc only)
Person 1: Ever heard of undertale 2? The itch.io game?
Person 2: i swear to fucking god bro our dialogues are getting weirder and weirder. Firstly you asked me about some shit named "Doki Buys Weed 4K", then the goofy ass ௹ symbol, AND NOW YOU'RE TALKING ABOUT SOME SHITTY ASS ITCH.IO GAME????
Person 1: But its go-
Person 2: SHUT THE FUCK UP BEFORE I FUCKING CHOKE YOU
Person 1: :(
by Corrozify May 23, 2023
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Sans Undertale

A character from Undertale, usually worshipped as a god. Sans is a skeleton.
doug: oh man i sure do love sans undertale
josh: me too doug
doug:im glad we share interests josh
josh: yes were very good friends
by Sand Undertlae December 7, 2020
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