Part of a collaboration done with R-Planet, NFTs for development rights on these lands were only obtainable by upgrading R-Planet land NFTs with Aether. Of course now you could potentially purchase one off the secondary market, but in order to develop one of the many undeveloped lands on Swineland, you would need to go through the process of acquiring the R-Planet land key and upgrading it with Upliftium. From scratch, that is the only way!