Here's what I know about the instalation in the GTA series. 1. The food you eat will play a major roll in the gameplay 2. Bikes will be available 3. Home invasions are now possible 4. You'r charachter can learn how to swim 5. Takes place in early 90's 6. Takes place in a [i]state[/i] I'll have to think of more, but just ask and I'll answer.