Many older industrial applications and retro games still rely on the 2.0 spec.
The mobile version of this standard became the backbone of the smartphone revolution. If you played an early 3D game on an iPhone or Android, you were likely using the mobile "subset" of OpenGL 2.0. opengl 20
While we have moved on to "Core Profiles" and more explicit APIs today, the logic of the —the heart of OpenGL 2.0—is still how we draw the world on our screens today. Many older industrial applications and retro games still