Late 2000s Touhou fangame energy running on pure atmosphere. Touhou Rinrouka from 2009 takes the doujin approach to ZUN's world and builds something that feels genuinely unsettling in spots. 囀る姥百合 opens with these whispered textures that crawl under your skin.
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The Septette arrangement here strips away the bombast and replaces it with something more melancholic, almost ghostly. 月夜の懐中時計 has this ticking urgency underneath warm synths. Then 誘う彼岸花 pulls you toward something you probably shouldn't follow.
The whole thing sits in this liminal space between familiar Touhou and something darker. If you like your Gensokyo with the lights turned way down, this one delivers.