While the aesthetics or the structure of the game (compaired to other immersive sims) is not unique, the sheer level of interaction with the world is what makes it as good as it is. If you like games like System shock, Deus Ex, Thief; this is a no brainer. I would recommend you also get Mooncrash dlc since is is one of the first real innovations in this unique but stagnated genre (every game follows the Looking Glass formula).