I’m not the greatest game designer in the world but if could give you 1 tip, would be to avoid mechanics that are too complex to grasp, specially in huge game jams, this is one has over 7k games for people to playtest (which is nearly impossible) so a quick game with a simple and clever mechanic might get more attention than a very complex game with a huge text tutorial.
Please don’t feel sad with this comment, I’m really just trying to help, believe me I’ve been reviewing games since day one and I see a lot of complex games that all comments are just “too complex but nice art!” and it makes me feel so bad for the devs that put hours into that just for people to barely play, and its not their fault, its just too many games.