Analysis of information sources in references of the Wikipedia article "日曆人" in Chinese language version.
Turns out, if you set your PC to the date December 13th, 2004, you trigger special Calendar Man dialogue—which you can see in the clip above. The date seems random, but players speculate that it's tied to a very special date. That's the year that the developer behind the game, Rocksteady, was founded after all.
Turns out, if you set your PC to the date December 13th, 2004, you trigger special Calendar Man dialogue—which you can see in the clip above. The date seems random, but players speculate that it's tied to a very special date. That's the year that the developer behind the game, Rocksteady, was founded after all.
