In this two player game one player is 'pro' nuclear energy, the other player is an environmentalist.At the start of the game, each player places 'neutral' nuclear power plants on a central zone of the board.Each player has two pawns he puts on the edges of the board. They each try to reach the 'neutral' power plants (by roll and move mechanism). The environmental player replaces the neutral power plants with trees, the 'pro-nuclear' player replaces it with a nuclear plant in his color.Both players have the ability to put obstacles on the board in order to slow down the other player.The game ends when all neutral plants have been replaced. The winner is the player who made the most replacements (and thus has the most neutral tokens in his possession). - BoardGameGeek