I've really enjoyed this trope of something seemingly innocent holding a dark, disturbing secret within it. It's a tricky thing to get right - without the material becoming too subtle or too in your face, losing all effect.

And certain analog horrors, like this one, gets it just right XD And makes it all the more believable with their themes, the dated material resembling a back-in-the-day type website. The internet is so vast, with many long since abandoned websites - what if one like this had hidden within it something more?

Really neat series. I highly recommend checking them out ^-^