At the moment here you can download old (and not so old) versions of the game. Keep in mind that most of them are quite old and many things may have changed since then.

git:// git repository of the game. Always contains a fresh version of it. So fresh, in fact, that it can be still green, sour and poisonous. Also, if you look at we may or may not have to kill you to keep the secret. Use at your own risk. Actually, the version in master branch is rarely noticeably ahead of the last release, so all of the above goes mostly for branch dev and the others.