As a video game sound designer, your primary responsibilities are to collect, edit, and create audio to use as sound effects and music in video games. Your duties include recording sounds, working to match audio with animations or game environments, editing soundtracks, implementing the files, and testing the sound in gameplay. You collaborate with audio engineers and game developers to ensure the final product matches the original concept. You typically use sound from an audio library, but if the intended tone is not available, you may record and mix sounds to produce the right gaming elements.