Yume Nikki is a 2004 RPG Maker exploration game by Kikiyama about Madotsuki, a girl who dreams through surreal worlds and collects Effects that change her abilities. The Knife is one of the most remembered Effects because it lets her attack dream characters, who react with this scream. Shared through fan wikis, playthroughs and soundboards, the clip outlived the game as a shorthand for dreamlike horror, often compared by editors to the FNAF Jumpscare Scream for its sudden shock value in short edits and memes today.