Done Large Island

How can I get the large island shown in this video (around 0:25):

 

You can't, I'm pretty sure that is bigger than the protected island area per person anyway.

(btw is this the To The Core replacement series?)

 

Yeah

 

If you are a T3 Donator you get access to the command.

 

I believe they used the Sky Lands world generation gamingoncaffiene series with his friend(cant remember the name) used that world generation also

 

its the Aether like generation- set your level to: level-type=SKYLANDS