Okay, so I just completed a Purity "Promised Land" victory, and I sure wish I'd know in advance what I was going to have to face: After you build the Exodus Gate, you can click on it once a turn to produce a new Earth Settler unit. They move very slowly (1 move/turn) and get blocked by Workers and other similar units. You have to plonk down 20 of them in settlements, and you have to find at least four spots to do it, because each settlement can only hold 6 settlers . The settlement spots have to be "legal" for a city, spacing-wise, but they don't have to be any good, resource-wise, because the settlement will stay at one hex and never grow. Finding spots can be tough if you've settled your cities pretty close together, as I did, so some pre-planning is in order. My first game I very fortunately found three spots on the coast of a friendly AI--and one last spot on the border with an enemy! Next time I try to win with Purity I might deliberately space my cities out a bit more, leaving a few "holes" in between. Can anyone who has finished a Supremacy and/or Harmony victory fill us in on what's required and how it went? (I doubt it can be as challenging!) P.S. Though nobody attacked my settlements, I stashed a military unit in each one to guard it. I get the sense my enemy would have been glad to wipe it out!