Dr Bugs
I like Doctor Mario (TM). hunting around, there's really not a lot of versions of it for PCs. Especially not for linux. I eventually found one from 1991(!!) which provided source code and was in the public domain.
So, I tried to compile it... and discovered it was written not so well. A bit of hacking at it and it (barely) compiled on a modern linux.
Then I upgraded my computer, so I tossed the code onto the BSD server that hosts my website... and it didn't compile. A few more minutes of hacking and it was finally up to spec here too.
I also changed the name, for some consistency and to better show what game it is meant to resemble. ;) Maybe someday I'll turn this into a GUI version. That'd be cool.
Here's a tarball of the code, fresh off the assembly command line...
Screenshots
Mad props to Scott Noecker, the original author. I doubt he can still be reached at this address, but you never know: noecker@seq.uncwil.edu . Yay for public domain!