I'm Canadian. Here, copyright lasts until 50 years after the author's death (which would have been 2006). Will I not be able to submit a game?
You can! I just wanted people to check the laws where they are to make sure it’s allowed in their country of residence. I’m not a lawyer and can’t give legal advice, but if you’ve checked your local laws and are confident that the original Winnie the Pooh book is in the public domain where you are, go ahead and enter if you want to. Thanks for checking!