The Finals is a great game, try it with my referral link so we can both get free in-game currency: https://id.embark.games/id/refer-a-friend/claim?code=LP44HGEB5-RSAQLCUPP-LBMIOOD4

Steps to becoming a multi-planetary species:
1. Moon base - launch from space, reduce costs
2. Mine nearby space resources - Moon & NEOs for rocket fuel & metals
3. Martian base
4. Mine the Asteroid Belt - trillions+ worth of rare-Earth metals

Presentation from Michael B. Duke, PhD, Colorado School of Mines
https://history.nasa.gov/DPT/Technology%20Priorities%20Recommendations/Space%20Resources%20DPT%20Boulder%2000.pdf