Now I’m going to be reading everything you post with a lisp thanks to that typo. I hope you’re happy!
On a serious note, you’re talking about a million years+ of pollutants to change the makeup of an entire planet’s atmosphere THAT much, at least with today’s output.
How about an atmosphere less planet and we have to make it habitable by generating atmosphere on it through the use of advanced structures that release required chemicals, the more structures we add to the planet the more quickly atmospheric changes begin to happen, could be a great gameplay mechanic.
Well it should look like that (think of the huge athmosphere generators in aliens) the air would condense nearby the generators… large clouds would shallow them…
and they would generate plumes of clouds into the air. Technically it is not that hard to show such an effect, you just need to throw particle systems to display clouds and gradually increase the radius of the planets atmosphere. May be i’ll try to prototype it sometime.