Something that always struck me about this sort of thing, or in similar games, is that it is only 2D and so rapidly becomes incredibly crowded with lines going everywhere.
We code in a 2D nature (rows and columns) but the flow is non-euclidean I guess
It's a shame because in 3D you can do much much cleaner layout in general.
There's not enough space to represent code graphically, anything significant becomes crowded and messy.
Every project like this starts off extolling that we are visual creatures, but this is a type of visualization we're not well suited to.