So, I played the demo for Civ5 (game hasn't unlocked for me yet) and I was wondering if anyone has some strategies that they've developed to take into account the changes that the game presents. For example: During the demo, I attacked a city state with 5 units (1 warrior, 2 hoplites, and 2 archers in what I figured wasn't a terrible formation) and was unsuccessful at conquering it. Anything that works particularily well?
As well, I was wondering about buying land tiles. I can see the benefit to buying tiles to get access to resources, but what other purpose would buying tiles serve? Other than perhaps blocking off routes for your competitors or connecting your different cities together, I don't see buying tiles important beyond that. Would a cities' growth be halted if the culture wasn't enough on its own to expand borders? I had heard that other cities couldn't be taken over by culture a la Civ4 so I guess my question is: Does buying up a whole bunch of tiles around a city serve a purpose?
What victories have you gotten and what have you done to get there? I played a little Civ4 recently to get me in the Civ mindset but with so many changes I'm wondering what people are doing differently now.