Game design software refers to tools and applications that help developers create video games. These programs provide features for designing graphics, programming gameplay mechanics, and managing game assets. Popular examples include Unity, Unreal Engine, and GameMaker Studio, which cater to different skill levels and types of games. These software solutions often include visual editors, scripting languages, and asset libraries, making it easier for both beginners and experienced developers to bring their ideas to life. They also support collaboration among team members, allowing artists, programmers, and designers to work together efficiently on a single project.