You already made it to the winners man :D, Congrats.
https://itch.io/jam/kenney-jam-2019/topic/533361/kenney-jam-2019-winners
If you want more, Here is a small one from my side,
the answer to your shadow check question for "Unlikely Shadows",
I came from Game Engine background, Vectors, Matrix, shaders is what i know the most,
So, 3 vectors from World Matrix of an object holds the direction, aka Forward, right and up vectors in Transform.
I'm just checking how accurately the Object is looking FORWARD towards light/camera.