original: A video game publisher is a company that publishes video games that they have either developed internally or have had developed by a video game developer.
simplifications: A video game publisher is a company that publishes video games they have made internally or have had made by a video game developer. A video game publisher only publishes games they have developed or had a company develope for them. A video game publisher releases it's own video games  or games by other video game developers. A video game publisher makes games and/or hires independent developers to make games as well. A video game publisher is a company that releases video games. They have either developed them internally or have had them developed outside the company. A video game publisher is a company that publishes video games. These games have been developed either within the company or by an outside video game developer. A video game publisher is a company that publishes video games they have developed or had developed by a video game developer. A video game publisher is a company that publishes video games. A video game publisher is a company that publishes video games. These games have been developed internally or by a video game developer. A video game publisher is a firm that produces games that they have made or have been made by another game maker.