Project file created by FMOD, a sound design tool used for authoring game sounds; saves the design for audio events, which are sounds (i.e., footsteps, explosions, and ambient sounds) that can be invoked in the game's program code; allows the sounds to be programmatically triggered and customized while the game is running, which creates a more immersive gameplay environment.

An FMOD project is built into an FMOD Events (.FEV) file and an FMOD Sound Bank (.FSB) file. These two files are used by the game runtime to trigger and play audio events. NOTE: FDP files were replaced by FSPRO files when FMOD Designer was renamed FMOD Studio. However, FDP files can still be opened by FMOD Studio.