Silver Age Beyond
This is related to the standard chart that describes Solar Systems in this game. The Alien populations is a number associated with each planet. If you want a highly populated planet, full of different alien races, go for a few billion. If you want a sparsely populated settlement, go with maybe a few thousand, and so on.
The same goes for the Human Population trait. It’s rare that one does not greatly overbalance the other, however. Everyone’s a minority somewhere.
It’s common with aliens to list the ‘most common’ races found on a given planet, (especially if they are from there, or particularly common to that planet).
Go back to the dummy planet template