The FMOD audio engine is a very common middleware used in modern games, starting with the PS1 generation of consoles. It was developed by Firelight Technologies and the first release was on 6th March 1995. It is still commonly used in the industry to this very day and has become an industry standard for audio.
In Uk magazine Develop issue 79 they give a short review of FMOD back in 2007:
You can download the FMOD source code for yourself here but note that it is not open source so it requires a license to use commerically: https://www.fmod.com/download
FMOD is used in so many games that creating comprehensive a list would be a time consuming process, but some of the major titles include:
We have also created a list of the Xbox games we know are using FMOD for sound: Xbox Games using FMOD ยท RetroReversing
If you know your game uses FMOD for audio then it can make the job a lot easier as you have the source code available to you.
Plus any reversing work you make on another games fmod module you can apply to your game.
Each platform that FMOD supports uses a slightly different implementation tailored to that platform so this post will try to list what we know about fmod compiled for other platforms such as different games consoles.
These files are listed as leftover strings in xbox compiled binaries:, it means that they are being used by Xbox games:
fmod\\src\\sound_software.c
fmod\\src\\system_file.c
fmod\\src\\system_thread.c
fmod\\src\\system_memory.c
fmod\\src\\fsound.c
fmod\\src\\fsound_dsp.c
fmod\\src\\fsound_dsp_fft.c
fmod\\src\\fsound_sample.c
fmod\\src\\fsound_stream.c
fmod\\src\\fsound_tag.c
fmod\\src\\fmusic.c
fmod\\src\\music_formatmod.c
fmod\\src\\music_formatit.c
fmod\\src\\music_formatxm.c
fmod\\src\\music_formats3m.c
fmod\\src\\music_formatfsb.c
fmod\\src\\format_oggvorbis.c
fmod\\src\\format_it.c
fmod\\src\\format_mpeg.c
fmod\\src\\format_fsb.c
fmod\\src\\format_wav.c
fmod\\ogg_vorbis\\ogg\\src\\framing.c
fmod\\ogg_vorbis\\vorbis\\lib\\vorbisfile.c
fmod\\ogg_vorbis\\vorbis\\lib\\info.c
fmod\\ogg_vorbis\\vorbis\\lib\\block.c
fmod\\ogg_vorbis\\vorbis\\lib\\psy.c
fmod\\ogg_vorbis\\vorbis\\lib\\sharedbook.c
fmod\\ogg_vorbis\\vorbis\\lib\\codebook.c
fmod\\ogg_vorbis\\vorbis\\lib\\mdct.c
fmod\\ogg_vorbis\\vorbis\\lib\\smallft.c
fmod\\ogg_vorbis\\vorbis\\lib\\envelope.c
fmod\\ogg_vorbis\\vorbis\\lib\\mapping0.c
fmod\\ogg_vorbis\\vorbis\\lib\\res0.c
fmod\\ogg_vorbis\\vorbis\\lib\\floor1.c
fmod\\ogg_vorbis\\vorbis\\lib\\floor0.c