I don’t see any place to enter in code (MAC Safari browser)
Yes, that is a very old level.
Where did you find it?
I don’t remember where I might have gotten the base link, but I got there from this base link. And then tried to play.
I was trying to find out how to complete the other achievements I believe like “Cross Bones - Beat Simple CPU” and I believe I might have done either a forum search or google search.
Well, it doesn’t seem to work, but those old levels worked in a different manner: just click on the red castle, and the code window will pop up! 