We have a source of energy (and eventually, at the levels would be several) on which to carry out flow to the "light bulb" (the same situation as with generators). Just add various nodal connection-changing characteristics and forcing to change the original route significantly. Locations of the hexagons are assembled, but not all of them are required to participate in the scheme. There will also be a number of branches of the active lines abutting against the boundary. Home fulfill the established conditions, and cases in which are superfluous "details" do not have to worry about us.
The whole process will be accompanied by a beautiful soundtrack and visuals pleasing the eye. A huge number of levels with gradually increasing complexity are able to permanently capture the gamers of any genre preferences.
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