It really is a fun little task to complete. The addition of new constraints keeps the levels interesting.
My solution almost never looked anything like the finished image. But I do like that the graph forms a picture rather than it being an arbitrary abstract design. I also found myself trying to guess what the image would be from the scrolling text, and looking forward to seeing it.
Really like how the nodes bounce off one-another: Both practically useful to stop them from overlapping and being hard to click, but also gives a nice 'real' feel to the interaction.
Tiny bug: On the second and third 'pastimes' themed levels (the ones you get to by pressing 2) the board is split into two but I can move the nodes freely between the sides.
Pishtaco's comment might have biased me, but it does feel like this would make a good relaxing puzzle game. I think it has the right mix of the task requiring some thought, whilst it also being possible to just guess and progress that way. The whole revealing a picture thing should go down well with the casual-set too. Plus, a casual game that ends with the message "You will die in this office
" would be golden.
It doesn't feel at all derivative to me, but maybe I've just not played what it's derived from