In the original XII's case I tried to play through it about 4 times. The first time I actually managed to get about 35 hours in, mostly because it was one of the only games, besides roms, I had at the time that weren't in storage. I got so bored with it, though. Each subsequent time I tried to play it, I ended up just getting too bored to play for more than 10 hours.

The job system edition, however, I was able to actually get into. It figures though that my copy of the game had to break.