Human's exploration steps are not confined in the earth any more. The Seven Big Planets were already dominated by mankind. However, the aliens were greatly irritated. They're taking revenue now! Use your strategic mind to layout towers to defend and fight against the alien invaders!
Noi utilizziamo cookies per consigliare contenuto, misurazione del traffico e pubblicitá personalizzata. Utilizzando questo sito, avrete preso atto del e .