

The game goes by the name Terra Invicta and it's currently in "pre-Kickstarter development", though there's no word on a launch date for the crowdfunding campaign just yet. XCOM: Enemy Unknown wasn't designed to be particularly mod-friendly and the clever Long War folks still managed to make one of the best mods of all time, and now that XCOM 2 has been designed from the ground-up with "a much deeper level of modding support", they're making an entirely new game instead of plumping for The Long War 2. Now, the team behind the mod have formed a studio and begun work on "a grand strategy game in which the player leads the defense of Earth during an alien invasion". The campaign structure isn't the only thing the mod changes - it's like the biggest and most delicious expansion imaginable - and you can find all the details here, as well as download links. As the title suggests, it extends the length of the campaign, making the fight against the invaders into a gruelling conflict rather than a streamlined series of missions.

XCOM's Long War mod is, to many, the definitive version of Firaxis' reboot of the alien-repelling strategy classic.
