Strategy games have come on in leaps and bounds since 1994, when the first XCOM title was released, and there may only be a pocketful of gamers who remember the original with the fondness it deserves.

Eighteen years on, though, and we were back in action, as you were charged with leading your troops in a host of fierce battles to defeat the alien front, rescue civilians and remote outlands around the world.

In true turn-based strategy style, you have to construct and expand your XCOM headquarters, recruit and train up unique soldiers.

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