Game rocks. Pretty much all I have to say.
Gameplay:
The gameplay's not alot different from the other games of the series. Running, Stealing, Killing, Stuff. Not alot different. Sprint now has Super Sprint, climbing is to get to harder obstacles, dual wielding certain weapons is a different part of gaming though not that good. The game world is huge especially when you go out at sea and there are no boundaries to keep you from going anywhere. Speaking of 'at sea' you can now swim and dive which is awesome and there's and marathons to test your button mashing of A and the ability to cheat using the jetpack. I beat the game in a week or two, just that easy. More vehicles at your disposal to race 'round town of Los Santos, San Fierro, Las Venturas. More aerovehicles and a harrier. A countryside to get curious in. Pretty awesome but I can't think of anything else that has a huge impact except they don't have the PSG-1 which made me sorta angry.
Sound:
The soundtrack of the game is good but not much to keep you going around in circles. Weather reports and accurate news on the radio. The ability to play your own soundtracks ingame from the custom soundtracks. Ummm...... I was thinking of 100+ tracks for each station.
Other:
The AI isn't very good especially for your homies in which they didn't go to college (joking). The cops always know where you are even with civilization far away. Ummm... the ability to shoot birds and they disappear.