I play MapleStory but it is down for regular maitenence. So, I figured I would try something else that Nexon has to offer.
After a quick search on MMORPG this game comes up as pretty popular so downloading and installing.

If my presumptions are correct after a quick preview of this sub-forum, this game has servers similar to MapleStory.
I don't want to make the same mistake I did with MapleStory and develop a character in the worst server and not be able to change.

So, if I am correct, what is the most popular server on JSP for Atlantica Online?

I guess the answer is none...

I cant talk for other servers but sikyon is fine.

As you are asking on site main reason is buying and selling using forum gold then the answer is it doesnt matter as all the markets are linked.

Hope that helps

this game seems pretty inactive on this forum. You get maybe a post every other day. Seeing that, I'm surprised the game is as populated as it is with how unpopular this game is here.