The game lets you enter anything at the protection and still appears to work. Emphasis on appears. I can easily imagine what happened in the Shades headquarter (which was in Berlin) back then:
"Hey, we have a new game here, let's see if we can release it."
"Is there any protection?"
"There is but apparently it doesn't work at all! Game still works even if we enter a wrong word."
"Hey cool, we have a release and don't have to do anything for it!".
