Change population

You mean something like this:
Crazy Experiment but Fun - General - Cities in Motion - Fanpage

Zitat von Syrikzero

How do I do that?

So:

Zitat von steveb

... Well you can see for yourself in the screens below. But the consequences are also HIGH

by increasing the citizens multiplier in environment.scripts to 100 ...

Otherwise you change the population and/or employment factor in an scriptfile in the metro.gs-file. As much luck as you have I can't remember the name of the file, so you've got to search.
But maybe someone else knows the name of the file.

Heureka, SimComNet remembered about it!
It' in the environment.script, line three and four.

$grid.citizens.homeMultiplier = 1.0;
$grid.citizens.workplaceMultiplier = 1.0;

Just change the numbers to an higher one and you'll increase the population. But consider it's an multplier, so an factor of 2 would be the dual amount of people!