There are some great point & clicks with kid protagonists, though I guess those are more dark(ish) fairy tales than horror, lika
Anna's Quest and
Night of the Rabbit.
Roki, somewhat annoying controls aside, is fantastic for something like the first 2/3 of the game. Unfortunately the last act really drags, there are no longer any characters to interact with, the puzzles which were great before get obscure and annoying. It's still well worth buying at the current super discount, but for that last act just find yourself a walkthrough and get through it as fast as possible, you'll have way more fun than I did.
My Memory of Us, which I think is a real gem, sits in a weird place, where the game itself isn't particularly dark or scary n the surface, and yet it also absolutely is because of what it's really about. There's one particular moment in that game that I won't spoil, that to me really felt like one of the saddest and most nightmare-ish things I've experienced in a video game, but I guess it's very subjective.
Personally I don't much like horror games, but I have a great fondness for the "kids on bikes" genre of movies, all the Goonies, Monster Squad and Super 8 and the like, and there are some games that go for something similar. There's
Oxenfree, but while it builds a good atmosphere I mostly didn't like the characters, and was somewhat confused by the results of my choices (and the choices are pretty much the whole point of the game. It's also a bit annoying that apparently I'm supposed to replay it multiple times for the "real" ending, and I certainly didn't feel like doing that.
Crossing Souls starts pretty good, I was enjoying it quite a bit, butafter a while I really didn't like the way the narrative went, and the way it messed up the gameplay by removing the characters from your roseter one by one.
Jenny leClue on the other hand is fantastic, I loved it and the only problem (unfortuantely a big one) is that it ends on a cliffhanger and the sequel is still MIA. If it wasn't for that cliffhanger it would be one of my absolute favourites. The characters are great, the mystery, the puzzles are fun the choices feel like they actually matter.