Voice actors are used to provide audio only for animations, radio plays, and audiobooks. In recent years the video game boom has meant more voice acting work available in that industry. Voice actors have to be able to communicate emotion and characterisation through their voice alone as the audience can’t see their facial expressions or physicality. Actors can play very small roles in advertisements that will play on television or on the internet such as Ads that play at the start of YouTube videos. Bigger companies are able to pay to get bigger acting names selling their products or services.