I was not expecting to enjoy a memorizing game but this was great! As has been noted, the path generally felt generous but sometimes inconsistent. You could use a Line2D to lay the path and generate the volumes between the points (with a little extra work to extend them so the edges meet correctly, the math for this is actually really easy and I can go over it if you're interested).
Also definitely wanted gamepad support, a thumbstick would have been nice to navigate with, esp since I used ctrl to slow down, the game closed (win11, firefox)!
Really appreciated the bread crumbs, couldn't have done it without them, and can imagine a lot of tweaks, like a limited amount so the oldest fades.
I also love what I think is a mutated version of in the hall of the mountain king.