I've never really played an open-world game that held my attention for too long (haven't played any of the GTAs for more than a couple hours, total, for example), with two exceptions:
1) Simpsons: Hit and Run. But it's not /really/ open world. Sort of in between, also, it's Simpsons. So I have like a natural bias.
2) Red Dead Redemption. I only started playing it about 2 weeks ago, and I've already clocked up a massive 10 hours on it (for me, that's a lot of game time). Again, though, I may just love it because the wild west is my favourite era/place in history.







