I've already linked a satellite to a planet. Why have I still not attained maximum population?
What are leagues? How are they different from the Ranking page?
[Social] Ranking . Friends . League
How can I upgrade Earth to level 7?
Planets . DFRs . Daily Reward
How can I join a league?
How can I get Aliens? What are they for?
What happens when I add friends on Walkr?
Need more help?