Leaf the Maze is a physical-digital hybrid game that will help people change their daily habits to live more sustainably. To play the game, the players need to download the app and calculate their carbon footprint, which determines the difficulty level of the game. The aim is to save mother nature who is trapped in the middle of the maze. The players have to solve fast-paced mini-games about sustainable life choices to earn steps. These steps should be used in collaboration with other players to make sure no one gets caught by the game monster Con-Cul.