That depends on how far you wish to define “3D” and in what perspective.
Most 3D games are infact 3D; that is to say the majority of objects are composed of 3D geometry (XYZ space). We can also prove this with the fact that if we were to play quake or any similar First person shooter, and then walked into a room full of mirrors (on the game of course), we’d see almost every aspect of our 3d character, the same as in real life. Remeber, it isnt like we need a 3D display for a first person shooter (we’re supposed to be seeing thrugh the eyes of the character, so a 3D display would actually be giving us additional info) Other games could be displayed in a true 3d means, but we dont really have that technology, and definatly not back when 3d games were first being made.
Tv /Monitors are in 2D, since this is all we need and much like our eyes, video recording is simply capturing a 2D viewpoint, so why would we need a 3D display for 2D data? This is most logical since displaying it in 3D wont give us much benifit, which is why we have 3 primary colours, and not 4:
Our eye (mainly) see in red, green and blue, so we use those as our basis on making colours (our primary colours, not to be confused with subtractive colour space teached in art (red blue yellow)). Birds have 4+ colour receptor thingys so they have 4 primary colours. So, we display objects by a 2D means when we only need a 2D output.
And Fps = Frames per seccond
And what I know of frame per secconds is how many image’s are shown at a fast speed.
and a image (Of anything is 2D not really 3D ) soo why do we call it 3D ???
Like a vedio camera when it records it saves images everything it recorded as images then plays them all at a fast speed but as I typed above anytype of images would be 2D images so why do we still call em 3D if its not real 3D why not just call it Fake 3D ?
Read above and also: Frames “doesnt” really mean 2D, but you are correct. Remember, when “FPS” exisited, we didnt really have 3D modeling apps then /Games. In order to show something moving /changing there would have to be an alteration in the image (frame), back then we only had film, so a new image had to be on each frame of the film to be shown.
Now, your graphic card also isnt the same as a film recorder, it’s all digital so frames dont really exist because… well… theres no film, but of course they use the same wording (FPS) because (i suppose) of the original meanings. So when your game say 24/fps /50fps that basically means 50 new still images are being captured and /or being played back.