/usr/share/applications/gvrng.desktop is in gvrng 4.4-3~deb9u1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 | [Desktop Entry]
Type=Application
Name=GvRng
GenericName=Guido van Robot NG
Comment=Guido van Robot NG
Icon=/usr/share/GvRng/bitmaps/gvrIcon-big.png
Exec=/usr/games/gvrng
Terminal=false
Categories=Development;Education;
|