/usr/share/applications/pacman.desktop is in pacman 10-17ubuntu2.
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 | [Desktop Entry]
Name=Pacman
GenericName=Arcade Game
Comment=A simple clone of the classic arcade game
Exec=pacman
Icon=pacmania
Type=Application
Categories=Game;ArcadeGame;
|