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  • Open Borders

    For a while, I've been playing SP, Monarch, Epic. I used to accept Open Borders with any civ that wanted it, unless there was a good reason for me to reject it. I've reconsidered lately and I now deny Open Borders unless there's a good reason to grant it. This seems to have had two effects.

    One, even though it will lead some civs to view you less positively, it seems to have cut down on wars I'm not ready for. I'm guessing this is because the AI civs will declare war on you to get a resource that you have and they want. If they don't know you have the resource, there's less chance they'll jump on you.

    Two, it really messes up their expansion. I've noticed a bit of strange behavior by the AI civs that benefits me. I was on a continent with one other civ. I had him bottled up in a corner and refused to grant Open Borders. After I had taken the land that I wanted, I granted Open Borders. His expansion logic seemed to be really messed up at that point. There was still available open land, and I was hoping that he would found a couple of cities there so I could take them. However, even though he only had three cities and had explored that available land at the beginning of the game, he didn't expand. I'm guessing that it was because he would have to cross a broad expanse of my territory with his settler, which the AI doesn't seem to do. However, he also had a galley sitting there next to his capital, but he didn't use it to expand either. It just sat there. In short, if you refuse Open Borders early, then grant it later, you still get the best of the effect because the AI civs' won't cross your land with a settler.

    Has anyone else noticed this behavior, or have just encountered random behavior?

  • #2
    I tend to start off with a real weak military so not having open borders can buy you like 20 turns. I will also decline open borders if I can use a second city to cordon off a nice slice of land to eventually settle. Often I'll place my second city in a suboptimal spot just to create that cultural barrier to guarantee I'll get the good spot and the suboptimal spot.

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    • #3
      If I am playing Continents or for some other reason I can cordon off a large part of the territory for my exclusive use I will deny open borders. Just be careful because the AI will build ships to get around you if it can. Most of the time though, I play on Plains or Inland Sea maps and it is impossible to cut anyone off from anything so I open borders to all. It does give a +1 to your relationships and once roads are built you will gain some $$$$ in trade. So I guess it depends. I am playing on Prince or Monarch, btw.

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      • #4
        I almost always deny Open Borders until all the cities that I want to build are built. Simply put, it's annoying to watch an AI wander into an area you want settled, but then land on the wrong spot...

        funny thing is, that on one map I actually managed to get the barbarians to make a city in a spot I wanted one, then took it from them later...

        I've seen AI's wander through my territory going after resources that they previously scouted. I've also seen them build galleys to go around me as well. but that's what coastal cities are there to prevent as well until galleons.

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        • #5
          If you make sure that you place your cities so that your zone of control extends out into the sea, then the AI civs can't use galleys to get around into the area that you've cordoned off.

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