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Hey @flipstar, Ive been playing since the beginning. They plan on expanding the map in the next few weeks. There will be a new "gold rush" to claim all the best land. The only land left now has very little resources left and not worth the rent. Join now, save bit of PGL(in game crypto) and get ready for gold rush part 2!!

About half of the land is still unrented, but you have to go a ways from the center to find it. There's a little tornado icon on the top left of the map screen that lets you filter for rented/unrented, though the highlighting is not very visible.