Got a few common questions, so here are the answers! It's mostly answered in the rules, but maybe this will clarify and underscore them. Ask any other questions here and I'll update the FAQ.
Q: May I start working on the game before it officially starts?
A: No! I mean, you can think about it, take notes, look up assets you might want to use, but avoid in-engine development until the Jam begins!
Q: May I use other people's plugins or artwork?
A: Yes! Just make sure you have the rights and credit accordingly.
Q: May I use pre-existing assets?
A: Yes! But if you did make assets specifically for this jam, please indicate that in your credits/description of your game. You deserve credit for you creativity!