You can find a detailed overview of factory behavior during upgrades here. Click the link to open it in a new tab to view it in full screen.
[https://docs.google.com/spreadsheets/d/18SkFcB5oFJHIoiQNXmghAqLV24PYIeh-QaMWJV7FDJY/edit?gid=736993440#gid=736993440](https://docs.google.com/spreadsheets/d/18SkFcB5oFJHIoiQNXmghAqLV24PYIeh-QaMWJV7FDJY/preview?gid=736993440#gid=736993440)
The overview tackles:
Unlocks at Player Level 8.
Unlocks at Player Level 11.
| Feature Level | Can be reached at Player Level |
|---|---|
| 2 | 11 |
| 4 | 14 |
| 7 | 18 |
| 10 | 23 |
| 14 | 29 |
| 18 | 36 |
| 23 | 46 |
| 28 | 57 |
| 34 | 72 |
| 40 | 90 |