Thanks for clarifying, I'd never have thought submitting early would be any advantage whatsoever, as I assumed most people would be focused on their own game during the submission window.
I also personally don't sort by submission order as I would assume that entries submitted earlier would have less content and would be lower quality (although your game is clearly an exception to that!).
I enjoyed playing, I like that it gives context to two things joining together (a brain needs two halves), and wasn't just "join two people together in the middle". I also like how the brain looks like it went from being sideways (with the eye facing outwards) to facing forwards when the two parts meet (looking at the camera). A tiny detail that entertained me probably more than it has any right to.
Some nicely designed puzzles, although occasionally it felt more like luck as I'd try the same technique again and ended up making it that time!
Overall, a very well polished game, and I think your earlybird tactic might just get you a spot in the final video!