I enjoy games. Not so much the computer kind, but board and card games (although I have no objection to playing them on the computer if necessary). I also enjoy making games, especially ones with interesting properties for dealing with AIs (changing rules, loose concepts of resource ownership, or deterministic but non-perfect information).
All games are simply degenerate forms of Nomic.
As with most gaming geeks, I have an ideal RPG system I am working on. Currently it is undergoing its fourth major iteration in the core rules. Details are available in my Subversion repository, and eventually on this site.
Occassionally I write things conforming to the d20 rule system, as published by Wizards of the Coast.
A popular 3rd edition D&D character sheet. It is designed to be filled out on a computer, then printed out.
SPL (like most acronyms, it stands for nothing anymore) is an experiment in designing a deterministic nonperfect information game; that is, there is no randomness involved, but at the same time you aren't totally aware of your opponent's actions.
You can read the rules.