I have the Steam version of XCom Enemy Within, and wish to configure it to use a higher resolution than the highest it gives me (1440 x 900).

I have modified my /Users/<user>/Library/Application Support/Steam/SteamApps/common/XCom-Enemy-Unknown/XCOMData/XComGame/Config/DefaultEngine.ini file to ensure it contains the following:

[SystemSettings] ResX=1920 ResY=1080

But this has had no effect. A similar modification worked for me when I was playing this game on Windows 8.1.

Is it possible to play this game with custom resolutions on OS X, or has this facility been disabled for some reason?


I've also updated ~/Library/Application Support/Feral Interactive/XCOM Enemy Unknown/XEW/MacInit/XComEngine.ini with the same content, to no avail.

  • can files be found here: ~/Library/Application Support/Feral Interactive/XCOM Enemy Unknown/ ? thats where the game config files should be found.
    – Nitro.de
    Commented Feb 11, 2015 at 9:17
  • So I found XcomEngine.ini in this folder tree, and edited ResX/Y appropriately. It seems that the XCom "configurator" overwrites these values though. Commented Feb 11, 2015 at 9:28
  • On what kind of machine are you trying to play? It sounds like your os or graphics card dont support higher resolution
    – Nitro.de
    Commented Feb 11, 2015 at 9:55
  • 2014 15" MBP w/ nvidia 750m Commented Feb 11, 2015 at 9:56
  • with retina display?
    – Nitro.de
    Commented Feb 11, 2015 at 10:29

1 Answer 1


You can set the launch options to

-ResX=1920 -ResY=1080  

Any options from http://udn.epicgames.com/Three/CommandLineArguments.html#Rendering should work.

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