Have you ever tried to make you OWN flash game? If yes than you should know how difficult to make animations, textures, models and coding and so on. And what happens if somebody like you will try to make real GTA game, using textures from original Grand Theft Auto. It looks like somebody just tired to make his own animations and coding, lol. Anyway you can explore a piece of the city, steal vehicles and try not to blow yourself up.