/usr/share/applications/screensavers/ is in ukui-control-center 1.1.3-0ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/applications/screensavers/ukui-abstractile.desktop
/usr/share/applications/screensavers/ukui-binaryring.desktop
/usr/share/applications/screensavers/ukui-cwaves.desktop
/usr/share/applications/screensavers/ukui-deco.desktop
/usr/share/applications/screensavers/ukui-distort.desktop
/usr/share/applications/screensavers/ukui-fiberlamp.desktop
/usr/share/applications/screensavers/ukui-fuzzyflakes.desktop
/usr/share/applications/screensavers/ukui-galaxy.desktop
/usr/share/applications/screensavers/ukui-hexadrop.desktop
/usr/share/applications/screensavers/ukui-m6502.desktop
/usr/share/applications/screensavers/ukui-metaballs.desktop
/usr/share/applications/screensavers/ukui-penrose.desktop
/usr/share/applications/screensavers/ukui-ripples.desktop
/usr/share/applications/screensavers/ukui-shadebobs.desktop
/usr/share/applications/screensavers/ukui-slidescreen.desktop
/usr/share/applications/screensavers/ukui-swirl.desktop
/usr/share/applications/screensavers/ukui-tessellimage.desktop
/usr/share/applications/screensavers/ukui-xlyap.desktop