Conclude the campaign of the puzzle game logical element to unlock the free sandbox mode, turning switches on and off until making the lights work. the green flow should get to every and each circle, but the whole system works in a positive and negative way and sometimes forgetting a single flip is enough to never conclude a level. the mouse continues as the player's main source of action, as the challenges grow more difficult and more neurons need to be used. drive the energy to the end of the circuit using logic thinking and a lot of brain work.
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