The Economic Research Upgrade: Improved Construction boosts the building speed for the players building upgrades.
| Level | Construction Speed Boost |
Research Lab Level |
|---|---|---|
| 1 | +1% | |
| 2 | +3% | |
| 3 | +6% | |
| 4 | +10% | |
| 5 | +15% | 10 |
| 6 | +22% | |
| 7 | +31% | |
| 8 | +43% | |
| 9 | +58% | |
| 10 | +78% |