Music

From Very Little…

The Atari PONG (1972) arcade machine game featured only sound effects and no music (depending on the definition…):

To a Lot…

Full orchestra soundtracks with lush string arrangements copying every Hollywood cliché (you can google those).

Back to Simplicity

Games like Inside:

Here are interesting interviews with Martin Stig Andersen, sound designer and composer for Inside and Limbo:

Specificities of music in games

Interactivity and generative music are the two main characteristics differentiating music for film and music for games.

Here is an excellent article on the history of audio and music in video games: How music became an essential ingredient of video games