"Energy City" is a game about energy saving. On a 6x5 grid 20 companies are placed. The red ones use old-fashioned light bulbs, the green ones energy saving lamps. On a player´s turn first tiles with these two sorts of lamps are placed, then the player can move his meeple up to 3 steps and then the player chooses from: a) getting victory points for adjacent lamp tiles b) placing lobby-tiles face-down on company-tiles or c) changing a company into an energy-saving one if the sum of the lobby-tiles of this company is greater then the number of the action card (the player gets VPs in case of success).