Hard to say since like others have said, if I come across a game I an not enjoying I will stop playing and forget about it. So instead I will go with the worst game I have ever played and finished and that is probably FF XII. It's not a bad game, it was just not at all what I was looking for at the time. I kept playing the entire game waiting for it to get better since many people I know told me they really like it but it just never got better. Bland story, bland characters, and a terrible battle system. The battle system was really the main issue I had with it. The whole real-time battle thing made me feel like a was playing a crappy MMO with a pair of computer controlled characters. It was just so passive and slow.