They figured it was too much effort to port the DS games to PS3, and this new collection was just to satisfy fans who wanted 60 fps.

Most of the people who wanted it on PS4 already did play them on PS3. But they wanted them again, especially in 60 fps.

DDD does go a bit off the rails. The characters time travel in an alternate dream dimension, where another one ends up in the dreams of the other.

Actually, it’s “three five eight days over two,” as in 358 days between 2 people.

100% no. You won’t even recognize the main antagonist or half of the protagonists.

358/2 Days came out after KH2 did. It wasn’t necessary to understand KH2.

Actually, according to Nomura, there’s a very clear explanation to the name of 2.8 - well, at least to him.