Don't worry about it . I've enjoyed getting Siam and I even spawned on a nice spot .
But hang on, Siam doesn't show up at all in our game, at least not in the app. It shows Songhai for you. Are you seeing Siam in the game?
So is it possible to play random or do you have to put in a civ? There are some strange things with the game generation. In another game I joined I got United States with Japan colors.
Random is possible and works fine. I think the colour issues are related to the app overriding the host's decisions when they are different from what the players picked in game setup on the website (or the app correcting host errors, as it was intended).
In this game, five players' picks on the website matched what I setup when starting the game. The three that didn't match are the ones that seem to have gone a bit strange. I tried to honor player requests in the thread, giving priority to the first poster. However, when joining the game and selecting civs on the website, at least one person made a different decision, probably because someone else had already taken their preferred civ.
So, I gave trolllogic Russia because I thought he'd requested it--my mistake, I confused him with lucifer kid. I think he must've selected random on the website, and was given Russia?! This one I'm not too clear about.
Lucifer kid I set as random (my same mistake above), but he I think selected Songhai on the web, and received it.
Finally, null master / Mel asked for Russia, but I gave him China because I'd tried to honor the earlier requests above in our thread from lucifer kid. But he had picked Russia in the app, and it overrode my decision, and he ended up with Russia in Chinese colors.
What I still don't get is how two players who went with random ended up with the same civ, and how another player on random got a civ which another player had already picked. I haven't seen that in any other MP games. All a bit mysterious, and I don't think I'll have any more to say about it!