dwproton, the Proton fork from the Dawn Winery, is now also available as a standalone AppImage in version 11.0-15.

The proton-appimage project by PerseidLab packages Proton variants as self-contained AppImages that run Windows games on Linux with no Steam required. The changes in version 11.0-15 are covered in the article on the release.

AppImage build of dwproton-11.0-15-x86_64. Source: https://dawn.wine/dawn-winery/dwproton/releases/download/dwproton-11.0-15/dwproton-11.0-15-x86_64.tar.xz

Source: GitHub