This directory stands a little apart from the rest of my games: they're not just mine. Most of the stuff here is written by other people. My own contributions are just a tiny part.
I've been allowed to publish everything here under creative common licenses, and some of it is explicitly marked with a chosen license. For those that aren't you should consider them as having the most restrictive creative commons license: CC BY-NC-ND. Please ask if you're uncertain.