A short description:
These guys did some FANTASTIC work with Long War, which I encourage all XCOM owners who are living under rocks to try.
Terra Invicta is a grand strategy game in which the player leads the defense of Earth during an alien invasion.
An alien force has arrived in the far reaches of Solar System and begun probing Earth's defenses and building an invasion fleet. The player must assemble a council of scientists, politicians, military leaders and operatives who can unite Earth's squabbling nations with the ultimate goal of taking the fight to the aliens in the high ground of outer space.
Status: In pre-Kickstarter development
Make the bit where I lose over and over and over canon if old.
EDIT: Right, homepage link! http://www.longwarstudios.com
Thanks, serversurfer :P