New lands much less buildings are essentially unlimited. Yes the game never ends by design. For instance 3 known lands so far each with 3 unexplored links so at least 9 more lands coming assuming the tiles do not cross-link more than once
Devs, Please do something about scouting, maybe start using sdp to defend scouts. It makes no sense how a small build with 200k to 300k spy attack can successfully scout someone with 7-8mil spy attk. I know the reason is you can pot up to scout, but builds should be able to defend scouts like they do assissinations and steals.