Grand Theft Auto:Tri-State Area is a fan fiction game concept created by WikiaIvan1997. The game is set 10 years after the 4th season. This game does not take place in any of the GTA universes, but rather in the Phineas & Ferb universe. Though it incorporates some of the pop culture & vehicle names from the GTA games.
The story follows a mute protagonist known as Ricky who flew to Danville because he had just finished school and got a message from Phineas Flynn to meet him there incase he got nothing else to do at home. But once Ricky arrived there, Phineas & his brother, Ferb, greet him with bad news. Their parents have moved away because Candace failed to bust her brothers too many times, and are now living in the outskirts of Jefferson County with Heinz Doofenshmirtz, leaving her to babysit the brothers. Not only that, but Norm has been elected as the mayor of Danville, which dissapoints many citizens of the city, as they think that Roger was a much better mayor. Because of that, Danville and the rest of the Tri-State Area has been caught in a gang war, and it's up to Phineas, Ferb & his friends to reunite with Phineas' family and stop the madness.
The game takes place in the Tri-State Area. The map of the game is like GTA V, but 1.5 times larger. The main map consists of Danville and Jefferson County. Each city is surrounded by countrysides such as forests & deserts of Jefferson County. In the countryside, there are also towns to make the world more alive. The game would also have a cel-shaded look, similar to Jet Set Radio.