How does Simultaneous Moves and Turn Based mode work?
Multiplayer has two modes of play. The first, just like Single Player, is the turn based mode, where one civilization takes their turn after another. While this is probably the most fair, it does take a long time, which is why most Multiplayer players stick to the other method, simultaneous moves (or “si-moves”). With this latter mode, all civilizations take their turns at the same time, quickly speeding up the game, especially if you have a lot of civilizaitons. It works for most MP games, however, one of its downsides is the problem of “double moves”, or having a unit move at the end of one turn and then the start of another turn, allowing it to move two tiles in a short amount of time. At any rate, both styles have turn timers which allow you to set a speed for how long the turn will last (based on a calculation of how many units and cities there are). While there are two modes of turn play, the game still remains the same.