- 65 million years ago, Mars was an M-class planet
- Dusty, cold, desert world with a very thin atmosphere
- Originally home to the Martian species
- The destruction of Dol'drm caused the planet's orbit to stray out of the habitable zone
- This led to ecological degradation that destroyed nearly all life on the planet
- The planet remained uninhabited for millions of years until Humans established colonies there
- 2103: Martian colonies were established, colonists originally dwelt within domed cities
- Eventually, the surface was altered to allow Humans to roam freely
- On April 5, 2385, rogue synths bombarded Mars, igniting flammable vapors in its stratosphere
- By the 32nd century, Mars was once again an inhabited planet
