A video game developer has several responsibilities, including creating efficient and clean code, producing gameplay feature and game idea prototypes, and helping to create the engine or base of games. You can choose to specialize in a specific platform, such as creating games for a console system, smartphones, or a computer system. Your duties may require you to develop game concepts, write code, work with sprints or Agile methodology, or assist with the game’s audio and design features. You may also collaborate with other video game creators to polish the game once you finish it.