Pretty visuals, a trivial, but present story, decent handling on the ship and guns, a decent arsenal on consumables and active/passive devices... It's not perfect, but it's a very good game for when you don't want to get invested in a long RPG and simply want to kill some baddies and get a sense of progression. With a bit of practice you start reliably winning the game (won my 12-th playthrough and every game since). A single run will cost you 2-2,5h if you absolutely need to explore each sector and kill every enemy, probably 30-ish minutes if you get the equipment you need, then rush for the finish line. Also a quick tip: play scout with the cloaking device loadout, it's awesome.
It's approachable. It's hard. It's fun. It's your mistakes that kill you. Again. And again. A very fun and easy to mod Roguelike, especially for someone (me) who doesn't play roguelikes all that often. Doesn't require you to read a lot to get started, has a decent tutorial, and you don't die in the first dungeon... usually ;) Lots of classes and races to pick from, some of which you'll need to unlock first (mostly the more complicated ones, so that's good).