I happened across this post on Cactu's with an updated version of Krebswelte that I never got to play (
http://cactusquid.blogspot.com/2010/05/krebswelte.html), but when I tried to download it, I get a page that says "Sorry, the page you were looking for in this blog does not exist.".
After searching around some more, I discovered that Krebswelte was included in Cactus Arcade 2.0, so I tried to download that (
http://cactusquid.blogspot.com/2010/08/cactus-arcade-20.html). No dice.
After clicking some other download links on his site, they appear to all be broken, and his most recent post is from July. It also contains a broken link (
http://www.dennaton.com/).
Are there any know mirros?