Maybe dragons dogma ? Probably not as played though

This is a bad take… Regions affected with mass migration, people without solid infrastructure, AC or clean water, people not able to move are in danger. They are not the ones polluting. Hypothetically you have 50% less people. Great. Think about who is still there and if pollution really is in decline then.

Oh wow thanks. That’s exactly what I was looking for. I hope this gets used by all the community!