How many countries have you played?

[capnq]

All of the playable nations in the demo: EA Marverni, Arcoscephale, Agartha, Atlantis & Kailasa.

SP EA Marverni, MA T'ien Ch'i, LA Agartha. Haven't had the full game long enough to finish a SP game, or try MP.

[thejeff]

Only a few in MP. EA Vanheim, MA Man, MA Jotunheim, LA Arcosephale. A few others in Dom2

Most in SP, but many of those were little more than start a game, play a year or so to get a feel for the nation, so I don't even remember most of the games.

I have no idea where people find time to play all nations many times in SP, unless it's just a few turns each time.

[Tuidjy]

I only play MP, and only the races that I think have a good chance of winning,
and which I find fun to play - i.e. diverse magic, no blood, no need for clamming
and turtling, and sympathetic troops.

EA: Arco, Ermor, Niefelheim, Tir-Na-Nog, Caelum... EA is fun!
MA: Pythium, R'lyeh, Jotunheim, Tir-na-Nog
LA: Man, R'lyeh, C'tis, Caelum

In Dominions II, I played exclusively Pythium, Caelum, and Vanheim...

[thejeff]

R'lyeh has sympathetic troops?

[Xietor]

I only play mp and only ma. Presently i am trying to play every race after playing only Pangaea for ages. Thus far i have played Shinuyama, Ctis, Pangaea, Pythium, and Arcos. But in time i will try them all-except maybe the water races.

I am not counting 1 v 1 mp games. I have played about 40 of those and likely every race.

[Hadrian_II]

I played a lot of different races in mp, so i might have forgotten some in my list:

EA: Arco, Abysia, Kailasa, Lanka
MA: Arco, Pythium, Man, Tien Chi, Machaka, Pangaea, Bandar Log, R'lyeh
LA: Arco, Jomon, Ctis

I dont play SP anymore, as the AI is a boring opponent, but before i start an MP game, i test my Nation with different gods and expansion plans.

[DrPraetorious]

I don't really play dom3 single player, except as test games which usually end pretty early, so I don't know if that counts. Obviously I've at-least tested a pretender build or two for every nation.

I may have gotten some ages confused, but I believe I have played the following nations MP at least once in dom3:
EA Arcos, Ermor, Sauromatia, T'ien Ch'i, Mictlan, Abysia, Caelum, C'tis, Agartha, Helheim, Niefelheim, Kailasa, R'lyeh.
MA Ermor, Pythium, Man, Marignon, Mictlan, T'ien Ch'i, Machaka, Agartha, Abysia, Pangaea, Jotunheim, Bandar Log, Atlantis.
LA Arcos, Man, Marignon, Mictlan, T'ien Ch'i, Utgard, Atlantis.

Did I play Vanheim in MP once? I think I did but now I'm not sure.
I also played a MP game as Haida Gwaii (custom nation.)