#3. XCOM 2
XCOM 2 takes place in a world where the commander lost in the first XCOM. Things didn't go out as planned, and the aliens conquered planet Earth. They took over human governments and eliminated almost all resistance to their invasion–except for a few remaining members of XCOM. XCOM 2 offers players a chance to strike back at the aliens, operating in secret and performing the kind of guerilla attacks that the aliens would've done during their invasion. The tables have turned.