The cave is dark now
A painted cave floor, and real darkness over it. Your own glow is how you see, and the brightest worm lights the most cave.
Glow Worms has a real cave floor: wet black-green stone slabs, moss, pebbles, boulders at the edge. And it is dark. Only what a light reaches shows.
Every worm carries a pool of light around it, and the pool grows with its score, so the leader lights up a wide patch of floor and a newcomer sees a small circle around its head. Each spore lights a little patch of its own, gold and clusters a bit more, and the heartspore lights a wide rose-lit clearing you can spot from across the cave. Hold to flare and the floor ahead opens up in a long lit cone.
The boulders are carved from the same stone, shaded and wet-rimmed, and a faint rim still shows each one in the dark so you are never pushed by something you could not see.
Same 75 seconds, same points, same bites, flare and heartspore.
