Those participating in this gamejam should note that many of the works entering public domain in 2025 in the US, are not necessarily public domain world-wide. If you were to make something based on Agatha Christie, for example, you'd have to geoblock your game to players outside of the US (is geoblocking even an option on Itch?). 

As a Canadian, I can't participate. Well, I could, but I couldn't distribute an Agatha Christie game until 2043 in my own country or the UK & EU.

I'm a little bummed, now that I've done this research. I was looking forward to participating! 

More info: https://en.wikipedia.org/wiki/2025_in_public_domain

I'm so mad. I just found out about this and yeah I was looking forward to participating but because of this I'm going to have to reconsider.  

I found some weird tales short stories that should be in the public domain in both the USA  and Canada, as they were in the public domain here in Canada  before the change in copyright law was put into effect.  Unless I'm misunderstanding something.