DEFCON

In terms of widescreen, this game is an oddball. First of all, it's important to note that this is not a 3D game in any way. The earth in this game is not a 3D globe, it is a 2D vector rectangle where the top sides end and the left and right sides are seamlessly "connected" without forming a curve. If you can, imagine a conveyor belt where the outside of the belt has a map of the earth on it, and the underside has a length of zero.

Since the map is 100% 2D vectors, you can actually take zooming into consideration here, because in a 2D environment, moving the camera backwards is the same thing as zooming out (it's a different thing in 3D environments). Anyway, if you zoom out all the way, it is anamorphic.

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This game automatically detected my Surround resolution and would always try to start using it, which would not work. I needed to go to Steam\steamapps\common\defcon\preferences.txt to turn windowed mode on for the game to run properly, by changing ScreenWindowed = 0 to ScreenWindowed = 1. The game is Vert- in multimon, so adjust your screen resolution to a single monitor here as well to get the game working properly.