"We can pull away from our home planet and home star, and now we're actually into interstellar space, and there are several thousand planets and stars here. Each of these stars has planetary nebula, etc. A lot of the worlds here are procedurally generated by the computer, but a lot of them are actually generated by other players, and the system goes and grabs them from the central server. The computer basically looks at how the player has played the game, how he has used this planet and does the same thing. They might be peaceful or warlike. Basically, profiling their personality."
Check it out over at Bit Tech.