Thanks to... (spelled in lowercase; the only level in this set to be as such) is the 145th level in Chip's Challenge 1. It is one of the secret levels, as well as a Credits level, in the Microsoft version of CC1 that can only be found by typing in its password; fortunately, it requires absolutely no effort to complete. The significance is that the level is a commemorative, thanking the people who converted the game from the original Lynx version to the popular MS version.