INFO
-There are now 3 main characters (in the above pic from left to right, Trevor, Franklin, and Michael), and you can switch character at any time
-They have different traits and mini-games to make them unique
-Updated car and weapons-physics
-More vehicles than any other GTA, bikes, motorcycles, cars, jetskis, planes and much more
-The game world is bigger than GTA IV, San Andreas and Red Dead Redemption COMBINED
-One large main city, and the rest of the world is varied with deserts, beaches, mountains etc
-You can't gain muscle or fat, but clothing customization is still there
-No romance this time since it doesn't fit the characters
-SCUBA-DIVING
-Many small things that happen in the world, you can talk with many NPCs, pick up hitchhikers, stop thieves etc
-Missions can be played in many ways since you can switch characters during missions, and they do different things (one character goes down a skyscraper on a rope, the next character watches from afar with a sniper while the third one commands the helicopter you rappel down from