This is a table of what population unlocks what.
| Population | What it unlocks |
|---|---|
| 4,000 | Basic Factory |
| 8,000 | Trade Depot |
| 10,000 | Global Trade HQ |
| 12,000 | Monster Trouble (if level 8+) |
| 20,000 | Cargo Ship Dock |
| 27,000 | Mass Production Factory |
| 80,000 | High-tech Factory |
| 90,000 | Vu Tower |
| 120,000 | Airport |
| 150,000 | Nano-tech Factory |
| 160,000 | Delivery to London |
| 260,000 | Delivery to Tokyo |