I am somewhat confused with "Windows Lemmings" explanation how to use "Going their separate ways". I should replace level file for "All the 6's" with this new one. There is file for "All the 6's", but there isn't that level available in the game. I can use both, "Going their separate ways" and "All the 6's", if I replace some other level file with one of these two. But, why there isn't "All the 6's" in the game if level file is included? Is it hidden level? Can I do something to activate that level?