I like this one. Systems, imagery, and music are all working towards something together, and the emotional underpinnings of the game made it extra effective.
I would love to see a post-jam version that tunes the difficulty and timings a little bit, to allow for some more exploration before you outgrow each shell (even making good time, I ended up unable to equip the boat or the container either).
But, clinging to the shadows of small dunes, inching towards victory, and relishing each pool of water proves to me that there's cool stuff happening here.