I'm just gonna start off with the Sealed Chamber. In pokemon Emerald when I finally found out how you got there and what not I was really hyped! Then when I dove up, that mysterious music started playing. The whole place was barren, with only the braile messages all around me. So I got my brother to translate. So learning about this scary sealed pokemon, in a cryptic ruined cave with creepy music kinda made me never go there again. It didn't help that the Regi caves had the same music...
Yeah, Sealed Chamber was unsettling, even if there was nothing but the braille writing. It was probably the music.
For starters, when I was eight, I had gotten lost in Mt. Moon in Yellow, and had a nightmare about finding a black cat (that looked like Purrloin) and it ate my Pikachu and then me. So I guess getting lost in the caves kinda scared me, but what didn't help was the music of those caves. The soundtrack's fantastic, don't get me wrong, but the music used in Mt. Moon, Rock Tunnel, and Victory Road creeped me out.
Then Ilex Forest and Ruins of Alph came around. And they creep me out more-so than Mt. Moon, and it's because of the music. That freaking music... it's like the music manifestation of you always being watched. With your ears.
Though the Haunted Chateau in D/P/Pt has to definitely be the most unnerving part of the Pokémon games, next to that abandoned house in Black/White 2. Like oh my goodness... and I went through those places in the daytime, and I was
still unnerved by it.
The Odd Keystone showing up behind you in Sea Mauville was creepy, though, good Lord.
And recently, when I descended into Cave of Origin in Omega Ruby, I found the rumbles and roars that Groudon was making throughout the cave was a freaky touch. Your character has to seriously be a badas
s to just continue down that hole--
alone--to meet a dangerous, ancient Pokémon that was going to destroy the world if it didn't get calmed down. And I think the worst thing was you didn't really know
when you were going to run into it. There was like a good few floors to go through before you did, and you could hear it from the
top floor. That... honestly wasn't a very pleasant experience for me, lol.
Those little touches have always unnerved me every time I play Pokémon, it doesn't matter in what version. There's always going to be something that makes me shiver, and majority of the time, it's the music. Which is probably the point,
it's always the music.