Wow that looks super interesting. Also fits the theme very nicely in my opinion! I was doing something like it, where one side is one character with the same movement, and the other side another character. Use them both to solve puzzles. But I'm switching it to something else.
May I ask, is there any simple. free, and easy to use programs to make 8 Bit/16 Bit music with? Also, thank you for all the support you are willing to give :)
Never done a game jam, we can interpret the Theme anyway we want to yes? Like as long as the game is inspired by "Mirror" we won't get negative ratings or anything.