Fkmlandunter is a clone of the german card game "Land Unter". It runs over the network using the TCP/IP protocol for data transmission. A console client with ncurses and a QT client written in python and a GUI client using SDL are available.
Kingdom Wars is a client/server chess daemon designed to run on multiple operating platforms. Both the client and the server are stand alone. The network protocal is open, and custom clients are welcome to be developed.
"TomKat" is a console based number game for Linux, written in Python. If you are tired of GUI games or don't have/use a desktop environment, this is perfect. Future versions will have network game play support.