FTL is a great rogue-like game! It will take a lot of skill and hours to play on the harder settings, even easy mode is a challenge.
There is so much customization that you may never play the same game twice. The 'universe' is randomly generated for every new play through providing a ton of replay-ability. (which is needed to unlock every ship)
This is a core rogue-like game, so do not fret from dieing, everything you learned can be carried on to the next play through. There is a lot of RNG elements to the game. Yet that does not detract from the game itself, this is a hugely tactical game that provides you with on the fly pausing to plan your next maneuver, and heavily focused on manually operating systems and power usage.
I can highly recommend this game if you are looking for something that has rpg elements and can be played casually whilst also offering some depth and replayability.