Hearing someone bring up HRtP in a thread for creepypastas feels like this was specifically meant for me. Love that game. It's fun, and its visuals and lack of much of a story makes it very dreamlike and even a bit creepy at points, like Sariel's fight with the weird Reimu visuals. Music's good too. It does feel like what a creepypasta game for Touhou might be.
Anyway, it's really, really hard to do a good gaming creepypasta apparently, since you don't see too many good ones compared to the other genres of creepypastas, and the ones you do see are typically based on their own original games, rather than a preestablished series.
I'm not sure how you would make a Touhou creepypasta work without it being some abstract thing that focuses less on the game itself or something, but whatever. 'Digital' horror content I've seen online typically involves Rin Satsuki, and I'd post some examples here I've watched on YouTube, but I gotta find them. There's also the (in)famous 'Touhou 6: Play as Rin Satsuki English Patch' you're probably aware of. Had to mention it, I guess.
There is also the Touhorror Wiki, a compilation of characters and other such concepts created by what I assume are new age creepypasta fans brought in by stuff like FNF. They don't really count as creepypasta, I'd say, since last time I checked, there wasn't much stories attached to them, and it seems to be more of a fun character design thing anyway, but figured I'd mention it, since it is in part inspired by creepypasta, and I think it's cool.
Fanfiction/fancomics like KKHTA and Igyoukyo are great, but they don't really count, at least in my opinion.
I remember listening to one about Koishi(?) talking to some guy through Touhou 11, but I didn't finish it, since me and my friends were just purposefully looking for bad ones to waste time. Like I said, not easy to write, but maybe it's just because Creepypasta is mostly filled with amateur writers (not a bad thing, of course).
There's a lot of Touhou horror content out there, but creepypastas in particular are...a bit tough to do, I guess. But maybe I need to broaden my horizons on what can be considered a 'creepypasta'.
