I can think of no game that had 2,000 developers. No, a credits list of over a thousand people does not mean that there were 1,000 developers (like an Assassins' Creed game, which usually has a development studio of no more than a few hundred). Office assistants who turn on the coffee machine are not developers. People who were consulted and given special thanks are not developers. Outsourcing is a very grey area.
- - - Updated - - -
whata team of 600 making a space MMO
A team this size is near unprecedented.
- - - Updated - - -
Also Brook's law is very much in effect here