Newest server?

[Bixby]

The worlds are listed in the order they were added in the NA worlds and JP worlds forums. If you hover over the names of the worlds, you'll get their forum IDs (e.g. 967 for Zalera). They were added in groups, a few at a time, so you can see, for example, that Mateus, Brynhildr, and Zalera were added together, since they have consecutive forum IDs that skip ahead several numbers from the previous server (Lich). Each of those forums also has a "Welcome to..." sticky, dated when the forum was created. For the later servers, that's maybe a day off from when the server itself was added. For the earlier servers, it's just when the forum was opened, since the servers had already been live for a while when the forums were opened.