Atomic Entertainment (katomic) is written for the KDE project http://www.kde.org by Stephan Kulow <coolo@kde.org> and Cristian Tiberna <tibirna@kde.org>. It is based on Atomic 1.0.67 by Andreas Wuest <AndreasWuest@gmx.de>.
Atomic Entertainment can be found in the package kdegames on ftp://ftp.kde.org/pub/kde/, the main ftp site of the KDE project.