Download Games Portal 2 (mediafire)

In Portal, the player controls the protagonist, Chell, from a first-person perspective as she is challenged to navigate through a series of rooms using the Aperture Science Handheld Portal Device, or portal gun. The portal gun can create two distinct portal ends, orange and blue. The portals create a visual and physical connection between two different locations in three-dimensional space. Neither end is specifically an entrance or exit; all objects that travel through one portal will exit through the other. An important aspect of the game's physics is momentum redirection. As moving objects pass through portals, they come through the exit portal at the same direction as the exit portal is facing and with the same speed with which they passed through the entrance portal.[ For example, a common maneuver is to jump down to a portal on the floor and emerge through a wall, flying over a gap or another obstacle. This allows the player to launch objects or Chell herself over great distances, both vertically and horizontally, referred to as 'flinging' by Valve. As GLaDOS puts it, "In layman's terms: speedy thing goes in, speedy thing comes out". If portal ends are not on parallel planes, the character passing through is reoriented to be upright with respect to gravity after leaving a portal end.Chell and all other objects in the game that can fit into the portal ends will pass through the portal. However, a portal shot cannot pass through an open portal; it will simply fail or create a new portal in an offset position. Creating a portal end instantly destroys an existing portal end of the same color. Moving objects, glass, special wall surfaces, liquids, or areas that are too small will not accommodate portals. Chell is sometimes provided with cubes that she can pick up and use to climb on or to hold down large buttons that open doors or activate mechanisms. Particle fields known as emancipation grills, occasionally called 'fizzlers' in the developer comentary, exist at the end of all and within some test chambers that, when passed through, close any open portals and disintegrate any object carried through. The fields also block attempts to fire portals through them.

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