A common object or material will be shown on the screen and you must decide if it reflects or absorbs most of the light it receives. At the bottom left is the button for things that reflects the light, and at the bottom right is the button for the things that absorbs most of the light. When selected the objects will appear at its correct side and it will be framed in green if answered correctly and in red if incorrectly. Define all 30 things to win the game.