Peter S. has collected 300+ missions that were created by our members with the Tenchu 2: Birth of the Stealth Assassins mission editor. All of them work with the UK version and can be downloaded here.
Unfortunately most of the custom missions we used to host were lost during the site hacking accident. If you happen to have some of them on your computer, no matter which country format, consider emailing them to me. Hopefully this way we can restore all the 500+ missions originally on this site.
Submit custom missions to restore (at) tenchu . de