About This File
Download the archive intended for your aspect ratio, unpack it and replace the original exe found in \UMonster\Binaries\Win64\ within the game folder.
This should remove the pillarboxing from the menus and the gameplay.
Tested at 2560x1080 and 3840x1080 with the latest EGS game version kindly provided by cheswick of /r/ultrawidemasterrace.
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What's New in Version 0.0.4
2560x1080 archive added.