As of 2024, five main Forza Horizon games had been released: Forza Horizon, Forza Horizon 2, Forza Horizon 3, Forza Horizon 4, and Forza Horizon 5.
The series began in 2012 with Forza Horizon, an open-world spin-off from the Forza Motorsport games. Its fictional Horizon Festival was set in Colorado. Playground Games then expanded the formula with Forza Horizon 2 in 2014, set around the French and Italian Rivieras, followed by Forza Horizon 3 in 2016, which moved the festival to a fictionalized Australia.
Forza Horizon 4 arrived in 2018 and recreated parts of Great Britain, while Forza Horizon 5 launched in 2021 with a fictionalized Mexico. The number five refers to the mainline Horizon releases, not every Forza game or expansion.
A common mix-up is counting Forza Motorsport titles alongside Horizon games. Motorsport is the separate track-racing branch of the franchise, whereas Horizon focuses on open-world driving, festival progression, exploration, and a broader arcade-racing style.