Quite simply the best RPG of all time. The depth of some sidequests puts some other games' main story lines to shame. It is filled with memorable characters, locations and stories, far better than what Fallout 3 (not to mention 4) offered, and it's the true sequel Fallout 1 and 2 deserved.

3/4 of its DLCs are quite nice, and even without them you are guaranteed at least a hundred hours worth of content. Running the game on modern systems can be a bit of a hassle, and I heavily recommend applying some basic modes to bring the UI up to somewhat modern standards, and fix a couple of bugs that were never officially patched. Still, it's one of the best games of all time.