The object of the game is to build a line of four of your marbles while trying to stop your opponent (human or computer) building a line of his or her own. A line can be horizontal, vertical or diagonal.

nautilus-scripts-manager is a small and easy to use application which allows any user to activate, deactivate or just see Nautilus scripts installed in the system.

Kaffeine is a media player for KDE based on VLC, which gives it a wide variety of supported media types and lets Kaffeine access CDs, DVDs, and network streams easily. Kaffeine also has an excellent support of digital TV (DVB).

PNMixer is a simple mixer application designed to run in your system tray. It integrates nicely into desktop environments that don't have a panel that supports applets and therefore can't run a mixer applet. In particular it's been used quite a lot with fbpanel and tint2, but should run fine in any system tray.

gElemental is a GTK+ periodic table viewer that provides detailed information about chemical elements.

ResidualVM is a cross-platform 3D game interpreter which allows you to play LucasArts' Lua-based 3D adventures (provided you already have their data files):