Earthlock Ultrawide mod 1.0.6

The small patcher removes the resolution limit introduced in update 1.17.

After patching, the list of resolutions available for selection will remain limited to the hardcoded 16:9 and 16:10 resolutions, but selecting any 16:9 resolution above native will now set the game to that monitor resolution.
Unpack the archive and patch the file as instructed Launch the game and select any or the highest resolution above that of your monitor (for example, choosing 2560x1440 at 2560x1080 will have the game set to 2560x1080 without displaying it) Disregard the numbers and back out into the main menu to see that the image properly fills the screen width. Tested the latest Epic version at 2560x1080. Check out my black bars remover for the game as well.

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The patcher allows to select 21:9 and wider resolutions in the game
Patch the game file as instructed by the tool. Launch the game and select your resolution in the settings to avoid stretching.
(sometimes the resolution may be listed under 16:9) Tested the latest Steam version briefly at 2560x1080 and 3840x1080.
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These patches are made using the addresses posted by Reddit user OnkelJupp to remove ultra-widescreen pillarboxing from Horizon Zero Dawn without the need for manual hex editing.
 Unpack the archive using the password pcgw Open the desired patcher and navigate to the game folder where HorizonZeroDawn.exe is located and click Start Launch the game and set the aspect ratio in the settings to Auto Included resolutions are 2560x1080, 3440x1440, 3840x1600, 5120x2160, 6880x2880 and a combined patcher for 32:9 aspect ratio resolutions 3840x1080 and 5120x1440.
Tested on the launch Steam version.