[MadisonGraciey]

In some 3D Video Games, they use inverted controls this is because the joystick is a lever. The player expects the opposite side of the joystick to act as a lever should, that is, for the game character to move/look down when pressing up on the joystick.

[uberman]

While I agree with you and I am personally an "inverter" I think it is interesting that I don't invert the X axis as would be suggested if it was strictly a lever.

[Aeronwen]

X axis isn't inverted anyway.

Imagine your head in place of the joystick. Pushing the top of your head forward (up) makes you look down. Back (down) makes you look up. Pushing the top of your head to the left makes you tilt your head left. Right leans right.

Not that it matters much, since tilting your view to the side isn't normally useful, left and right get mapped to turning instead.