【實用娛樂app】Guide Enemy Unknown|最夯免費app-綠色工廠好玩App

Threatened by an unknown enemy, Earth’s governments unite to form an elite paramilitary organization, known as XCOM. As the commander of XCOM, you must create a fully operational base, research alien technologies, plan combat missions, and lead your soldiers in fierce battles against a terrifying alien invasion. The decisions you make will affect the fate of humanity. You are our last hope.