建立要求
生态系统建立前，该区域所需绘制的地形、自然目标和水。
地形：长草、重质土、积水
另需：水域
| 自然目标 | 数量 |
|---|---|
| Ferns | at least 250 |
| Semi-Aquatic Plants | at least 250 |
| Trees | 20 to 80 |
繁荣要求
野放的动物必须填满的物种角色，已建立的生态系统才会繁荣。
| 物种角色 | 填补它的物种 |
|---|---|
| Grazers | Black Wildebeest, Blue Wildebeest, Common Hippopotamus, Common Ostrich, European Bison, Malayan Tapir, Mountain Hare, Nyala, Plains Zebra, Springbok, Thomson's Gazelle, Wild Boar |
| Wetland Engineers | Asian Small-Clawed Otter, Common Hippopotamus, Eurasian Beaver |
| Soil Rooters | Aardvark, Common Warthog, Meerkat, North Sulawesi Babirusa, Sun Bear, Sunda Pangolin, Wild Boar |