Initial D: Extreme Stage is a racing game developed exclusively for the PlayStation 3 and, at the moment of writing, only available in Japan. The game was developed by Sega, who also took care of publishing the title. It was released on July 3, 2008. Below you will find a full collection of cheat codes and unlockables for Initial D: Extreme Stage.

Cheats:

Bonus music
Press L1 + R1 + Triangle at the “Sound Test” menu and you will get two bonus songs.

Unlockables:

Races
Bunta Fujiwara at Akina Downhill: Defeat Project D Takumi at Tsukuba.
Project D Keisuke at Tsukuba: Defeat all available rivals.
Project D Takumi at Tsukuba: Defeat Project D Keisuke at Tsukuba.