End of the World constantly had me constantly wondering what's next and whether there's any hidden areas or whatever. Traverse Town wasn't exactly like that though, but it also gave you the feeling that there's some hidden area we keep missing. Oh, and as for KH2 candidates, TWTNW and Twilight Town definitely take that role, though I was disappointed that Hollow Bastion didn't have the mystery or mystic feeling, like it did in KH1. Damn, I still wanted to be able to get all of the switches in the basement to. Anyways, yeah.. KH2's worlds lacked that feeling a lot, except the two I mentioned. TWTNW's mysteries being wondering where the other "graves" lead to, wondering about the rooms, and what was beyond the truck.