Yume Nikki, a surreal adventure game released by Kikiyama in 2004, has become a cornerstone of internet subculture and the indie horror genre. Unlike traditional RPGs, the game focuses on exploration within the vivid and often disturbing dreams of a shut-in protagonist named Madotsuki. Memes surrounding Yume Nikki typically range from atmospheric 'lo-fi' aesthetics to sudden, jarring encounters with entities like Uboa. The game's lack of dialogue and open-ended nature allows fans to project their own meanings, making it a favorite for meme creators who appreciate liminal spaces, psychological horror, and the quiet isolation of the hikikomori lifestyle. It remains a powerful influence on modern titles like Undertale and Omori, keeping its meme legacy alive through niche communities.