A software development game is an interactive learning tool that allows players to create and modify an application. It is usually designed for students who want to become professional computer application developers. Students are usually given the responsibility of staff in a digital community, and have to build computer software within a certain time frame. This type of video games is a great tool to teach students computer science and programming concepts such as loops and conditional statements. Zachtronics' Shenzhen I/O is a great example of this kind of video game. It has a user interface that resembles the tools used by developers in browsers and teaches code iteration and scripting.