Hmmm. That list is scrollable — maybe this world is available but it's somewhere at the end?
I can't scroll at all past the two blank doors. That is where it ends
What if you scroll the other way? Land of Passion is the succubus boss world. Haven't you fought her yet?
Scrolling the other way doesn't get me any further than the Icy Frontier. It won't go past that. I do not have access to the Land of Passion and have not fought any succubus boss
