Meteorite Research Tree 21
* additive effect per level
Unlock requirements:
- Layer 1 requires upgrade level 5 in layer 0
- Layer 2 requires upgrade level 6 in layer 1 in the same branch
- Layer 3 requires upgrade level 5 in layer 2 in the same branch
- Layer 4 requires upgrade level 6 in layer 3 in the same branch
The total cost to finish tree 21 is 252,750 meteorites.