yeah. only differences from gta3 i've seen are bikes, new missions, extra side missions, more weapons (like vice city or san andreas style, where you can have 1 out of 3 different types of gun), change of clothes.
and snow apparently, but only when you get to level 9 of the car salesman, and you only get to do levels higher than 6 once, i failed on level 8 and got annoyed, drove off, did another mission then stupidly saved the game instead of just reloading it.
you can add a custom music channel, like on the pc too.
that's about it, but i thought GTA3 was the best one anyway so happy to be able to play it anywhere.