Neat little game! Love the shader and modelling work! Sound FX and music are nice and dinky too! I wonder if deciding where to connect to should be automated or not? Could be that there are a certain number of types of sockets that can only connect to each other (e.g. red, blue, green), and maybe some kind of constraint on the length of these connections. Setting that aside, I think a time attack mode could work brilliantly with this, successful connections could gain time based on their length, nice frantic energy ensues!