The design choice was realism, not just a larger car roster
A racing game can make cars feel different by changing their speed or steering response. Gran Turismo’s team took a more demanding route: model the cars themselves and build physics that made their behavior matter. That meant the player’s experience depended not only on what a car looked like, but on how it handled on the track.
Turning cars into something the game could drive
A 3D model gives a car its visible shape. A physics model gives the game rules for how it moves. Those rules have to make changes in steering, acceleration, and cornering produce a coherent result, so a car feels like more than a different skin on the same vehicle.
That is a difficult balance in a console game: the behavior must feel convincing, but it also has to run within the machine’s limits. The work was not simply drawing more cars. It was making each one’s appearance and handling belong to the same idea of a real vehicle.
A small team, a long bet
With only 15 people working across five years, the project’s depth came at a cost in time and personal strain. Creator Kazunori Yamauchi described sleeping under his desk and rarely going home. The result became the PlayStation’s best-selling title—a striking payoff for a design that asked players to care about how cars behaved, not just how fast they went.
The lasting implication is that Gran Turismo’s realism was not a decorative feature added at the end. It was the organizing principle that shaped the work behind the game.
