Yes! At the end of the jam, you submit just one project. The main requirement is that the project is less than 300 written words. I think it's quite experimental as to what a "poem" in Twine should look like. 😌 Check out these reference games, they have a pretty cool hybrid feeling between normal twine stories and poetry like experiences. Let me know if you have any other questions!
"Wolfgirls In Love" by Kitty Horrorshow https://kittyhorrorshow.itch.io/wolfgirls
"Stars" by lysander https://kreutzerland.itch.io/stars