If you check the level editor, there are some older levels such as quicksort-the-spiral that are not in the current campaign. I also recall seeing a page with levels from older campaigns but I can’t find it anymore.
These levels have the same art style but they don’t use our current heroes and have a few other differences. For example, in quicksort there is a button that expands the editor, making it fill the screen, which can be useful. However, there were no error messages for incorrect code.
Anyway, these levels are interesting and they cover useful concepts. Why aren’t they in the current campaign? Will they be added?
Another thing, swapping items in quicksort sometimes made the ogres fly off the screen and not return. And are we supposed to sort them in order from smallest on the left to biggest on the right?