Dream up a situation you are walking on a road. Suddenly, you heard an old mans voice from a house on roadside for help. You entered into that house after opening the door. You saw that old man inside seemed to be mentally disturbed. When you are about to talk to him, he pushed you down all of a sudden and he ran away by locking the door. Now there is no one to help you. It is your own responsibility to open the door, you need to find the necessary objects to solve the puzzles. As you are the person of problem solving nature, surely you will achieve it.
Mouse Interaction.