I'm having a lot of fun with Harald on an island plates map. I know he's supposed to be one of the weaker civs. I declared war on England as soon as we met, and I captured London in the ancient era with just 2 longboats. (I bought a slinger to defend it) Then stopped attacking her cities but refused peace and just kept pillaging coastal tiles and stealing workers until she *finally* built up an army, then I peaced-out.
I got the God of the Sea pantheon, and I'm settling cities anywhere there are multiple fish tiles; each city gets a harbor and a holy site (for the stave church.) A lot of them are just snow cities and don't have enough land to build anything else. But they are production powerhouses and crank out warships.
I've continued harassing everybody; I declare war, take minor cities in good locations from which to attack my next victim; rape and pillage everything in sight but don't capturing the major cities right away. Then offer a peace deal and DOW someone else. Eventually I'm going to take *everything* (except the city states; they love me)