Horizon Zero Dawn Ultrawide Tool

Horizon Zero Dawn is available to everyone via Steam, but many users complain that the game fails to work in ultrawide. To fix this issue and enjoy the game on ultrawide resolutions, a tweak is needed.

Provided you are familiar with hex editing, and you own a dedicated editor, you can do so yourself. Nevertheless, be advised that any unwanted modifications to the hex code of the main executable might render the game unusable. In other words, you should know what you are doing before you go ahead and modify the hex code.

Aiming to help you avoid all this hassle, the Horizon Zero Dawn Ultrawide Tool provides a straightforward user interface to help you apply the necessary changes without dealing with the HEX code. As a plus, there is no need to install the application.

Before using this patch tool, make sure the game is not running, otherwise the patch will not work. Moreover, you should make a backup copy of the game’s main executable file, just to be on the safe side of things.

The main window of the Horizon Zero Dawn Ultrawide Tool displays a list of 21:9 resolutions to choose from, as well as a button to select all 32:9 resolutions. Once you decided which resolutions you want, all you have to do is click on the “Patch” button to apply the changes.

That is practically all you need to do. The next time you run the game, it should support ultrawide resolutions as well. Please be aware that the game can only be patched once. In order to change to another resolution, you must first restore the original executable file from the backup. Should anything go wrong, you can repair the game via Steam, as it is not advisable to uninstall and reinstall it.