Niveaux de recherche
| Niveau | Contenu déverrouillé | Palier de recherche | Recherché à |
|---|---|---|---|
| Level 1 | Fertility Level 1 (+15% fertility) | ||
| Level 2 | Old World Swallowtail Fact Sheet | ||
| Level 3 | Release groups and release to the wild | ||
| Level 4 | Fertility Level 2 (+30% fertility) |
