>>35920119Because a lot of spooky shit was introduced there. It's the generation that introduced Darkrai, that dispenses description. They introduced Rotom, and made a whole bangin' haunted house to have it in. It introduced Giratina which is the first ghost type legendary and is spooky as shit, and they went through the numbers to make sure it always had a fitting environment.
Also it's generally a colder region and that lends itself well for spookyness. Mt. Coronet was a huge part of the region design and it's a spooky dark cave, Fog was also introduced there, and Fog has that spooky misterious vibe as well.
Not to mention Solaceon Ruins. Sinnoh just has a bunch of spooky shit going on at the same time.
