Wolfenstein: Enemy Territory Statistics generates various statistics out of ET server log files in HTML format. ETS is single executable utility and only requires Perl.
Sample output can be found here: http://cade.datamax.bg/away/ets/sample/
Blobtrix is a Tetris-like game for two players on one board. One player plays upwards and the other downwards. You can select blocks from the block list and move them to the correct location before the older blocks have collided.
The game is loosely based on the classic Spacetaxi. The objective is to pick up passengers waiting on a number of platforms and drop them where they want to go.