I mean, it's a bit like FTL and a bit like Descent, but nothing like either of those games at the same time. Creator Stephen Wheadon describes it as: "It is a full 6 degrees of freedom shooter/stealth game that is a spiritual successor to classics like Descent. The player is assigned to escort a mobile base in a journey across space. A large fleet of warships is in pursuit, desperately searching for the base to prevent its escape." And also this stuff: "The stealth gameplay allows for surprise attacks, evasion and hacking opportunities. Everything is 100% destructible, including large bases (which explode in a satisfying chain reaction of detonations)."
There's a Greenlight going on here, and there's a video below, which I suspect you will want to watch. This one looks fascinating.