A game publisher is a company responsible for the marketing, distribution, and promotion of video games. They often work closely with game developers to ensure that the final product meets quality standards and is ready for release. Publishers may also provide funding for development and help with localization, which makes games accessible to different languages and cultures. In addition to handling the business side, game publishers play a crucial role in deciding how and when a game is released. They may choose platforms for distribution, such as PC, consoles, or mobile devices, and manage relationships with retailers and digital storefronts like Steam or Epic Games Store.