Star Ocean 3: Till the End of Time. It's my personal crack addiction. Over 7, wait no, 8 playthroughs (4 on 4D (Hardest) Difficulty) I've clocked just over 1000 hours. I'm kind of scared play any further on my last play. You see my first play was a general (60 hours), then speed plays (30 or 40 hours) until I got some more Battle Trophies, then 2 Difficulty playthroughs and finally my 'Tank' 4D play. Most characters are around lvl 201, buffed out equips (Mostly with BoP, which give +20% ATK/DEF (It stacks) and you put 8 on a piece of equipment... fun ensues) and well... 600, close to 700+ hours. Back on my old Memory card I had a 900+ save before it decided to explode.
Once again... CRACK ADDICTION.