The world is your body. You crawl on it. And on your body, a third the
size, crawls you again, on the same cells, making the same moves;
and on that one, you again. As above, so below. You're always falling
inwards: the world you're on swells past the edge of the screen, the
snake on it becomes the world, and a new you comes into view on its back.
It's one snake. Every turn you make, every layer makes. Eat to grow, and
every layer grows. Where a bend in the world sweeps under you, you're
cut, and the tail falls off as food. Bite yourself and it's over.
◀ ▶ (or A D, or tap either side, or swipe) turn left and right. Z changes how fast you fall. Space pauses. Time slows as the world bends.