Video games are a massive industry with over 59 billion USD in sales in 2015. The process of creating a video game is much more complicated than you might think, that involves a number of various disciplines and cross-generational teamwork. We have broken down the process into its component pieces so that you can see what roles each team member plays to make something like Overwatch possible.

Early Pre production:

Art Direction
Gameplay Design
Planning
Documents
Designing
Testing
Implementation
Product release

Post Production:

Marketing
Distribution
Support
Post Maintainance
End of Life

This is when the next generation of video games may be created, and when a game is retired, it is no longer eligible for future development. However, the developers may continue to work on it, but without official support.