I really enjoyed this. I played until I was about the population of Wyoming. I would love to have finished, but at this point my money was going up so fast I could just click on the upgrades constantly. But when I do that, the particle effects and crowd jumping stacked up and made my computer lag so bad I couldn't upgrade fast enough to keep up. It would be great if there was an option to turn them off.
And I can't tell what the different upgrades do. Could you give a description of what they do? Thank you.