If you can withstand the confrontation between the main character of the game and the supercomputer, then welcome to an inventive world full of puzzles. You will find yourself in the laboratory with a girl named Chell. You have to find out the truth about many incomprehensible things and find the key to their solution.

What happens when you find the first answer? A portal will open in front of you. Do not forget to take a few gizmos with you, in case they come in handy in the future. You will open a new location with even more interesting and exciting puzzles. Find the courage to open all portals.