pretty cool stuff. I think you did a good job in showing the public domain. Also some very nice trivia in there like the thing about sherlock holmes being public domain only without showing/having emotions (like wtf??).
Oh! I forgot to link to the public domain video it's from (the URL was already in the code, but the link to it was missing) - https://archive.org/details/domaincullenjsanchez - I'll update the game to include it.