XCOM: Enemy Unknown brings you back to the 1990s as a military commander tasked with saving humanity from an alien invasion.
The game takes place on Earth, where a massive alien fleet has invaded, destroying major cities and leaving only a few scattered groups of survivors. As the commander of an elite special forces unit known as XCOM, you must gather a team of soldiers, equipment, and resources to fight back against the alien threat.
The gameplay is tactical and turn-based, where you plan your squad's moves for each mission, taking into account enemy positions, terrain, and available resources. You'll need to make tough decisions about who to save, who to sacrifice, and how to allocate limited resources to maximize your chances of success.