Moonrabbit Collection
ldjam.com
ldjam.com
Really cool.
The fog could be done via greyscale, with something like:
col = 0,0,0,clamp(inp.r + sin(time) * 0.5,0,1)
The glow worm additive sprite could just be distance based in the shader.
(I didn't look at the code itself if it's available, so this is just my impression based on the supplied screenshot gif).
Fortunately "Moonrabbit Collection" is a cool title in its own right, so we can leave this up unmolested.