The protagonist will have to jump huge distances using physics knowledge and portals, fight with turrets and avoid large emissions of radioactive waste. The more levels Chell goes through, the more difficult and dangerous for her life the subsequent locations will be. The areas will have pressure plates to which you will need to move huge cubes with the help of a high-tech cannon. Portals will be indicated in blue and orange, if it is open, then the player will be able to see what is on the other side of the door, if closed, it will only show your color. Portals can be created only on a certain type of surface, and the entrance and exit can be done only 1.

The first levels will be educational, they will tell you how to use the device. Throughout the passage, the heroine will be chased by the GLaDOS robot, telling what to do and where to go. She is the one who must test the new weapon that allows the creation of portals. The plot takes place in the scientific laboratory Aperture, in which the main character, Chell, fell. Portal Is a first-person puzzle adventure.

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