Very nice! Feels pretty good to play, and the scaling aspect is fun. I think it could use a bit more contrast - at times it’s hard for me to tell what’s a wall or platform vs the background.
Thanks! Yeah, fair enough - the title screen went out the window while I tried to fix the collision thrashing. If you bring water back to your home pond and fill it up, your friend can swim around too. But just swimming is more fun anyway!