The game is a single-player First-person shooter puzzle game and yes as you guessed it the game does revolved primarily about portals.
The hero doesn’t carry the usual gun but instead a device that allows the users to create two portals,
to help the character get from point a to point b in series of complex obstacles course of physical puzzles and challenges by opening portals to manoeuvre objects and themselves.
The game begins with you waking up to find yourself in a small square glass room with a bed, toilet and a table. Placed on the top of the table is a clipboard, mug and radio playing music you can pick up these items to move them around the room. Outside of the glass room you can see a digital clock counting down from 59seconds as the timer goes down you are greeted by the voice of GLaDOS which stands for (Genetic Lifeform and Disk Operating System) the Artificial intelligence running the Aperture Laboratories.
But as GLaDOS informs the protagonist of the test being ready to begin you notice there a problem when the voice becomes distorted due to technical problem and sparks come from the ceiling, once the countdown reaches zero the GLaDOS gets her voice back and inform you that a portal shell open in three two one. Once you walk through the portal you are in a room that contains the glass square room you had been in originally. As you walk around the square glass room you come to a door that leads to a second room once you walk through the door into the room the door behind you closes and a cube block falls from the ceiling from the left corner of the room, in the room is two doors the one you had originally walked throw and a new door. On the floor you see a big red button and you have reached your first puzzle to solve in which you pick up the cube that had fallen and place it on top of the red button and it opens the new door once you open the door GLaDOS talks to you again asking you to enter status chamber through the new door to continue on to the next test chamber.
You then continue through each test chamber each puzzle getting trickier then the last as you continue on you collect a portal creating gun to help you complete each test, as you complete each complex obstacles course of physical puzzles you are encourage to complete the takes by being bribed. By being told that you will receive a cake at the end of the course of test. But you find out that the Artificial intelligence has malfunctioned and is homicidal, the final test isn’t a test at all she is trying to kill you and you are forced to defeat her to save your life you must shut her down.
The game was developers and publishers by Valve Corporation
The Designer behind the creation of portal was Kim Swift
The game was release on 10th October 2007
The game is available on many platforms being: