The remnants of human civilization are threatened by gigantic creatures breeding beneath the earth. You must control powerful mechs from the future to hold off this alien threat. Each attempt to save the world presents a new randomly generated challenge in this turn-based strategy game from the makers of FTL.

Here, order is maintained by the Church of Seiros, which hosts the prestigious Officer’s Academy within its headquarters. You are invited to teach one of its three mighty houses, each comprised of students brimming with personality and represented by a royal from one of three territories. As their professor, you must lead your students in their academic lives and in turn-based, tactical RPG battles wrought with strategic, new twists to overcome. Which house, and which path, will you choose?

War is coming to the continent of Fódlan.

Here, order is maintained by the Church of Seiros, which hosts the prestigious Officer’s Academy within its headquarters. You are invited to teach one of its three mighty houses, each comprised of students brimming with personality and represented by a royal from one of three territories. As their professor, you must lead your students in their academic lives and in turn-based, tactical RPG battles wrought with strategic, new twists to overcome. Which house, and which path, will you choose?

XCOM: Enemy Unknown will place you in control of a secret paramilitary organization called XCOM. As the XCOM commander, you will defend against a terrifying global alien invasion by managing resources, advancing technologies, and overseeing combat strategies and individual unit tactics.

The original XCOM is widely regarded as one of the best games ever made and has now been re-imagined by the strategy experts at Firaxis Games. XCOM: Enemy Unknown will expand on that legacy with an entirely new invasion story, enemies and technologies to fight aliens and defend Earth.

You will control the fate of the human race through researching alien technologies, creating and managing a fully operational base, planning combat missions and controlling soldier movement in battle. Key Features Strategy Evolved: XCOM: Enemy Unknown couples tactical turn-based gameplay with incredible action sequences and on-the-ground combat.

Strategic Base: Recruit, customize and grow unique soldiers and manage your personnel. Detect and intercept the alien threat as you build and expand your XCOM headquarters.

Tactical Combat: Direct soldier squads in turn-based ground battles and deploy air units such as the Interceptor and Skyranger.

Worldwide Threat: Combat spans the globe as the XCOM team engages in over 70 unique missions, interacting and negotiating with governments around the world.

XCOM 2 is the sequel to XCOM: Enemy Unknown, the 2012 award-winning strategy game of the year. Earth has changed and is now under alien rule. Facing impossible odds you must rebuild XCOM, and ignite a global resistance to reclaim our world and save humanity.

Twenty years have passed since world leaders offered an unconditional surrender to alien forces and XCOM, the planet's last line of defense, was left decimated and scattered. Now the aliens rule Earth, building shining cities that promise a brilliant future for humanity on the surface, while concealing a sinister agenda below and eliminating all who dissent from their new order.Only those who live at the edges of the world have a margin of freedom. Here, a force gathers once again to stand up for humanity. Always on the run, the remnant XCOM forces must find a way to rise from the ashes, expose the insidious truth behind the occupation, and eliminate the alien threat once and for all.

1905年苏联率先发现了未知生命遗迹并开展研究，人类第一次开始接触到坍塌与逆向坍塌技术。



2030年，由于七名中学生误闯北兰岛封锁区域，遭受因遗迹物质（坍塌液）泄露而身患广域性低辐射感染症（E.L.I.D）患者的袭击。前往救援的特维警察小队行动失败，还使得遗迹内坍塌液全面泄露。因E.L.I.D的缘故，地球上适合人类居住的区域逐渐减少；为争夺和守卫仅剩的适合生存的土地，历史上最惨烈的第三次世界大战爆发了。



停战之后，人与人之间依然存在着敌视和仇恨，而国家的力量已经不足以维持自己区域稳定和安全， 所以不得不借助安全承包商（PMC）的力量。



而《少女前线》的时间就设定在此时，玩家在其中扮演一名安全承包商旗下的指挥官，通过指挥旗下的战术少女来维护世界的秩序和稳定。