/usr/share/app-install/desktop/lincity-ng:lincity-ng.desktop is in app-install-data 15.10.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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X-AppInstall-Package=lincity-ng
X-AppInstall-Popcon=47
X-AppInstall-Section=universe
Type=Application
Version=1.0
Name=Lincity-NG
GenericName=City Simulation Game
Comment=Plan and build a city and take care of transport, economics, electricity and others.
Icon=lincity-ng
Exec=lincity-ng
Terminal=false
StartupNotify=false
Categories=Game;Simulation;
Keywords=game;simulation;city;strategy;3D;economics;transport;buildings;
X-Ubuntu-Gettext-Domain=app-install-data
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