Very fun game! I don't think interpreting the theme of scale as climb is the best fit. But nonethless this was the best one with that interpretation that I tried!
Thank you! We took the theme as a bit of a pun; you build to scale the walls of a lighthouse. I've seen people take scale as a balancing scale or as fish scales, and personally I really enjoy such alternative interpretations, even if they're not quite what the jam intended, hence our choice.