Yes the effect is based on a bunch of nodes and shaders I wrote. It's a bit of a spaghetti mess right now because of how Godot handles multi-instancing and me not having enough time to figure out if there's a better way to create the effect (it probably exists). I was thinking of making a couple of videos on YT, a video about this effect could be one of them. Glad you enjoyed the game, thanks for playing!