gta4 question

ive always thought gta games were just sandbox style where you got points for going around stealing cars, hitting cops, picking up hookers, etc.... however, after watching the trailers for gta4 it seems like there is an actual story behind it. were all the games like this or is this new? it seems like something i might actually pick up

ive always thought gta games were just sandbox style where you got points for going around stealing cars, hitting cops, picking up hookers, etc.... however, after watching the trailers for gta4 it seems like there is an actual story behind it. were all the games like this or is this new? it seems like something i might actually pick up

mattg90520