Breaking this down by audience based on playing FTL. Either way I recommend this game.

If you have not played FTL:
This game is a vehicle based psudo-roguelike with active world map control and active grid based pausable combat in a Mad Max meets Sci-fi setting. Lay into raiders and pirates and borg with Autocannons, 100mm guns, pulse lasers, and ramming attacks using your escort vehicles while you Main Convoy Vehicle (MCV) trundles along in the middle of the screen. If your escorts blow up, they're gone, if your MCV blows up you lose. Your MCV has activated abilities you can buy or swap in from the default EMP cannon to mine launchers to Super Heavy rail guns. Outside of the main road, there can be obstructions which if collided with will destroy your escorts, so watch out for the skulls! Watch your fuel, because distance traveled outside of combat will deplete it and if you run out you'll be sitting ducks for raider attacks (which if you win will then give you fuel usually).

This game is HARD. My play time was to beat it on easy for the first time. There are random encounters both good and bad to be had out in the wastes, and sometimes they just don't come up your way. The radio beacons found on the map can be encounters, quests, or just a barrel of magic the gathering cards. Not even kidding on that last one. There are mini-bosses you can encounter if you get the right quests, and they are special MCV vs. MCV-ish-thing encounters. There is a final boss. It is not fair. You will lose the first time you encounter it. Accept that, do as well as you can and get as far as possible to see as much of it as you can before you lose. It's all about learning it's patterns and how to prepare for next time.

For those who have played FTL:
FTL with more perceived player agency. The world map is free movement, no time pressure beyond fuel consumption. The combat is more active as there is potentially more things to keep track of in terms of your own vehicle's positioning and weapons range. Unlocks are similarly random and specific. Difficulty is just as punishing while you learn the mechanics, and runs can get shut down early with bad RNG. No fleeing in combat means you don't have a way out if a situation gets hopeless so keep that in mind. The last boss is similar kinds of unfair, so be ready to learn it's patterns and die to it a few times. Main place it doesn't measure up for me to FTL is the music. It's not bad by any means, and it fades into the background nicely. I just hold FTL's OST in that high of regard. The game does have a space ship in it, but you don't get to fly it sadly.

Pick this game up if you want some of that FTL fun-ishing difficulty.