RealTimeBattle is a programming game, in which robots controlled by programs are fighting each other. The goal is to destroy the enemies, using the radar to examine the environment and the cannon to shoot.
TetriNET server written in Perl.
RanBunHyou is a Q&D generator of BINGO-like word games and other randomized teaching materials from plain text files. Entertains children studying vocabulary, etc. For Java 2+ (jre1.4+) and Macintosh System 7 to 9, being re-written in perl/CGI.