This is a Debian prepackaged version of the xtris game.

This package was put together by Joey Hess <joeyh@debian.org>, using
sources from:
	http://www.iagora.com/~espel/xtris/xtris.html

The following copyright applies to this package:

/*
 *   A multi-player version of Tetris for the X Window System
 *
 *   Copyright (C) 1996 Roger Espel Llima <roger.espel.llima@pobox.com>
 *
 *   Started: 10 Oct 1996
 *   Version: 1.15
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation. See the file COPYING for details.
 *
 */

On Debian systemsm the complete text of the GPL can be found in
the file /usr/share/common-licenses/GPL