Sound communicates are

Sound is an essential element of any video game. It can adhere both functional or aesthetic purposes. 

Method

• Crossfade – like in Spotify, YouTube Music
• Assigned –
• As Main Mechanic

Crossfade usage

State change

Games are visual media. You need to demonstrate in-game world

Change between calm and combat. Change between several states of alert.

Change between several locations

Gradual Change depending on the pace, speed

Scripted setpiece, level

Phase 1 of race track, then phase 2, phase 3 and final culmination phase.

Assigned

Collectibles music

Coins, breadcrumbs,

Interaction with things mechanics

Portal gel sounds

Hint of the right path

Auditorium, Portal 2 sounds

As Main Mechanic

Audiosurf - generate content of the level