Final Fantasy II(not IV) is quite possibly the closest you can get to crap in an entertainment media.
The battle system is awful, to say the least. The more you use certain stats, the stronger they get. But to have high evasion, you need to start out with high evasion as well. It takes too long to get anything done in this game. The balance of the game goes between piss easy to dick crushingly hard, especially when you deal with zombies that drain your HP. If it can't get any worse, the dungeons have multiple doored rooms which you would think lead to treasure, but almost all of them lead to an empty room with an absurdly high encounter rate and EVEN STRONGER MONSTERS, so you could die just because you chose the wrong door, although being given no indication of which door is the right one. Eventually you'll learn to not check all the doors, but later they actually have good treasure in them.
The story is mediocre and doesn't go past "kill the bad guy", which I would normally forgive, but it's just awful. Even when you actually succeed, the antagonist never changes. I will admit that Mateus is one of the most badass antagonists ever if you see what he does in the DoS version. I can't forgive this because the characters are just so god awful. You only have a grudge against the empire because they dun killed your parents, and the characters aren't looked into any more. They just gave you the bare bones version of a cliche. I'd think a series that emphasizes character development and story would actually develop the characters. And about the characters, the game has a nasty tendency to kill off almost everyone that even talks to you, even the cool characters.
It did have an interesting word system, although it was too damn limited because the characters never know what you're talking about until Hilda talked to you about it 5 minutes ago. It also introduced the Chocobo and a Cid, a staple in the series and made a few references to the clearly superior Final Fantasy IV. The only other thing constantly good about this game is the music, which is what I pretty much expected of Final Fantasy games. I don't blame you, I played through the whole game and never once had any fun. Be aware that I played the GBA version, which I heard was a huge improvement over the NES version. I'm not even a Final Fantasy hater and I think this is the worst game I have ever played.
But yeah, like the above user said, don't sell the Blood Sword. I sold it, and boy was I in a lot of trouble.