OpenGL is an industrial standard for 3D graphics (see www.opengl.org). It becomes more and more popular; the development of new 3D graphics accelerators and faster processors available for everyone makes it an important and useful standard.
Framsticks' OpenGL module replaces old world preview window and gives you
much nicer 3D world display. Creatures' sticks can be displayed as solid
cylinders, all objects are shaded (almost like POV-Ray renderings).
(click on the picture to get full size view)
All this is possible in real-time (on fast machines).