I found it short as well, and also easier compared to San Andreas. I agree it is a bit of disappointment. There also isn't a lot of variety in terms of what you have to do in the missions...

i finished it
seemed alot shorter than san andreas
this only took me a couple of weeks when san andreas took months
story was good, but simply not long enough - not enough missions imo - a big disappointment on that aspect

Did anyone else get bored and stop playing this?

I really want to go finish it lol, exams got in the way

woo 45% now and unlocked final island

just got it this morning, pitty i got exams atm

Just brought this, need a few days of work now

Not had time, exams and all that
The mission im on right now is the bank heist one, about 35%

So anyone finished story mode? Quite shocking what happens at the end...

Also a tip for getting the "One Man army" achievement which is an easy 40 gamerscore points, drive to the south of algonquin island, swim across to happiness island and steal a speed boat at the pier there. then just drive the boat around the map under 6 stars (from going to the final island early) for 5 mins.

Tedious but something to do when you're bored

If you go to the comedy club on the Alonquin island you will see a short stand up act by none other than Ricky Gervais