Hello Acerola Jammers,
After doing my legal due diligence I have learned that it is actually against many platforms' terms of service to redistribute even free assets. So, my rule asking for your game to be hosted on GitHub is technically encouraging all participants to break the terms of service of platforms like the Unity and Unreal marketplace, and I really don't want to be sued because that would suck. So I am RESCINDING the source requirement on submissions. In future jams, I will probably ask for a written list of assets used, but I am not asking for that in this jam. Also, if you are considered for the top 10 I will probably ask for your game's source, so keep that in mind.
It's still optional for you to do so and I encourage you to learn if you're a current student or aspiring professional as having your projects hosted on GitHub to link from your resume is very valuable. But, I hope this relieves some stress.
Good luck with the rest of the development period!
Acerola