I am an old hand in a matrix-based chatroom game called "The Duel of Swords". It started on AOL but has now moved to the WWW <a href="http://www.ringsofhonor.org/" target="_new">The Rings of Honor</a>. I gained an edge in the game by compiling scouting reports on prospective opponents. A database is used to manage the many-to-many relationship. The programming thus includes database access, number crunching into a couple hundred accumulators, and output formatting.
The first platform was an Apple/Claris HyperCard stack. I then used it as my lab project for college database course (Oracle and Java). Now it is a web application using LAMP. Perl modules are CGI, DBI + DBD::mysql, and HTML::Template.
I would love to show it to you all, but it is password protected. :)
The harder I work, the luckier I get.