Best FPS controls

[susymar]

CDiablo said:
M&KWiiDSDual AnalogPSP

For non 3D FPS's(Duke Nukem/Doom 1/ECT)
SNES, PS1 style controller PCDual Analog

How come a First Person Shooter is not 3D?

Duke Nukem and Doom were 3D, but with no vertical aiming. Only left-right gun scrolling and character free moving.