Quote Originally Posted by Lelila38 View Post
I don't know too much about the actual Eureka. Would you explain more, please?
I get it's Allagan, but what should I expect?
Originally the dev team planned to make content during the CT raid series where you explore Eureka that was underneath the Crystal Tower. This (just like the entire CT story) is based off Eureka from FFIII where it was an optional endgame dungeon underneath the tower that housed ultimate weapons and the Ninja and Sage jobs.

That was why you had Nero get excited over the aetheric readings during that one cutscene, alluding to Eureka.

However they scrapped the idea and retooled it into the exploratory isle in Stormblood. This however seems theyre finally going back to that old idea and giving it fruition