You can find it on Home of The Underdog. The official site got lost some rewrites ago, but there will probably come some new site again. I could add compiled versions to the repository for reference... It's a sokoban-like game, but a lot more enjoyable.
The level editor (Source Code got lost, but Apache-license is also valid for this one. If someone can disassemble it and create some maintainable sourcecode from it, very welcome)
http://plasmaworks.com/files/pits/pitsedit.zip
