...and many more, including Guerrilla Games, IO Interactive, Quantic Dream, Starbreeze, 2K Czech, Gas Powered Games, People Can Fly, Ninja Theory, etc.
If you're a game development studio, research institute, university, or serious games contractor, then you need a commercial membership. These are available in multiple packages:
Indie — For one-man shops.
Silver — Small teams getting started.
Gold — Independent studios, single projects.
Platinum — AAA developers serious about gameplay.
Diamond — Top of the range for large studios.
Click here to find out more about these options.