Portal 2 is a first-person puzzle-platform video game developed and
published
by Valve Corporation. The sequel to the 2007 video game Portal, it was
was on 5 March 2010, after a week-long alternate reality game based
new patch for the original game. Although designed initially for the
Sharing in planned
in the fourth quarter of 2010 was the play of the week of 18 April moved
2011th The game was by Valve through Steam for Microsoft Windows
published and
Mac OS X, while the PlayStation 3, Xbox 360 and retail Windows / OS X
Versions
of the game distributed by Electronic Arts. The publication of the
Game via Steam
was a second alternate reality game for several weeks, the Potato Sack
advance
with 13 independently-developed titles, distributed in a
culminated
Computing parody Portal 2 for several hours early release.
Like Portal, Portal 2 essentially comprises a series of puzzles that must be
solved by teleporting the player’s character and simple objects
with the
“Portal Gun”, a device that inter-dimensional portals between two plane
Create
Levels. The game physics allow the momentum to continue through this
will
Portals, which must be used creatively to maneuver through the game
Challenges. Most of the gameplay elements of the original site were
in the retained
Continued and more were added to Portal 2, including
Tractor beams, laser
Diversion and varnish-like gels, the specific properties, objects to
mediate
they cover. These gels were prepared by the team from the Independent Games
created
Festival-winning DigiPen student project Tag: The Power of Paint.
Within the single-player campaign, the player returns as the human
Chell,

with awakened from stasis after many years. Chell must now navigate the
dilapidated Aperture Science Enrichment Center and its test chambers with the
Portal Gun, while the system is reactivated by GLaDOS again
established, an
artificially intelligent computer, which first appeared in the portal. The plot
longer than that of the portal and introduces new characters, including the
A.I. Wheatley, voiced by Stephen Merchant, and photographs of the deceased
Aperture Science CEO Cave Johnson, voiced by JK Simmons. Ellen McLain
reprized the role of GLaDOS. Jonathan Coulton and The National delivered a
Each song for the game. Portal 2 is also a two-player co-op,
in which the robot-player characters Atlas and P-body are each one
certain
Portal Gun, and to cooperate to solve test chambers
specifically designed to require cooperation. Valve provided post-
release
Support for the game, including additional downloadable
Content and a
simplified map editor, players can create and share
Test chambers with
other.
Although many critics were initially concerned about the difficulty of
Continued expansion into a full portal critics universally praised Portal 2
The
Game writing, pacing, and black humor were marked out as a stand-
Elements, with critics applauding the voice work of McLain, dealers
and
Simmons. Review also highlighted the new elements of gameplay, the game is
challenging but surmountable learning curve, and additional co-operative
Mode. In the player selection Golden Joystick Awards 2011 has been the game
excellent
the “Ultimate Game of the Year”