Roman numerals - Wikipedia, the free encyclopedia

The notation of Roman numerals has varied through the centuries. Originally, it was common to use IIII to represent four, because IV represented the Roman god Jupiter, whose Latin name, IVPPITER, begins with IV.

Not a mistake.

Also, That clock was a much more difficult minigame in the Japanese version which was taken out for US/EU release. I will ask about trying to get it restored.