Gamepad UI was mostly designed to be used for the Steam Deck alone, but since it has several major advantages over the default UI, we're currently aiming to use it as a universal menu replacement for all users. Note that this may be subject to change depending on the feedback we receive.
If you would like to test out this new update, please set your Entropy : Zero 2 beta branch to "release-1.5". For more information about upcoming beta branches, please check out our Entropy : Zero 2 version guide.
https://steamcommunity.com/sharedfiles/filedetails/?id=2861987007
If you need to use the default menu again, you can currently do so by going into the game's properties and typing "-nogamepadui" in the game's launch options.