Gravity is a fundamental force of nature.
Productivity
In MOO2 each planet has either low, normal or high gravity. The productivity of colonists can be affected by gravity. The following table summarizes productive penalties depending on racial traits and planet gravity:
| Low-G planet | Normal planet | High-G planet | |
|---|---|---|---|
Low-G race |
none |
-25% |
|
-50% |
Normal race |
-25% |
none |
-50% |
High-G race |
-25% |
none |
-
This penalty applies to farming, industrial and research outputs. It can be negated by building a Planetary Gravity Generator, which is a mid level technology.
-
The race can use evolutionary mutation to change its gravity optimum.
Marine Combat
-
Heavy-G troops have extra hit point. This effectively doubles early marine hit points and is a considerable bonus.
-
Low-G troops have 10% combat rating penalty.
-
Combat performance of troops is not affected by the gravity of the planet being invaded or by fighting in zero gravity.