/usr/share/applications/ltris.desktop is in ltris 1.0.19-3+b1.
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 10 11 | [Desktop Entry]
Name=LTris
GenericName=Puzzle game
Comment=A tetris clone with nice graphics
Exec=ltris
Icon=/usr/share/games/icons/ltris48.gif
StartupNotify=true
Terminal=false
Type=Application
Categories=Game;
Keywords=Bricks;Tetris;
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