I'm looking for horror (or at least horror-adjacent) literature that has an "Alice in Wonderland" type vibe, with a protagonist that ends up in a strange nightmare world. Also I'd prefer if the nightmare world was, in fact, actually real, and not "it was all just a dream/coma" at the end. Possibly also anything similar to the game Yume Nikki, which is also IMO very Alice-In-Wonderland but horror-esque.
by Oceanic_Operetta