

To obtain the Silver Hammer, the player must head into the first room in Apartment 51 and move towards the left side of the screen. This page uses Creative Commons Licensed content from Wikipedia ( view authors).The Silver Hammer is a special relic that can be obtained in Apartment 51. Some gaming journalists ranked Portal 2 among the top games of 2011, and several named it their Game of the Year. Reviews also highlighted the new gameplay elements, the game's challenging but surmountable learning curve, and the additional cooperative mode. The game's writing, pacing, and dark humor were highlighted as stand-out elements, and critics applauded the voice work of McLain, Merchant, and Simmons. Some reviewers expressed concern about the difficulty of expanding Portal into a full sequel but critics universally praised Portal 2. Valve provided post-release support for the game, including additional downloadable content and a simplified map editor to allow players to create and share test chambers with others.

Portal 2 also includes a two-player cooperative mode, in which the robotic player-characters Atlas and P-Body are each given a portal gun and are required to work together to solve puzzles.

Jonathan Coulton and The National each produced a song for the game. Ellen McLain reprised the role of GLaDOS. The storyline introduces new characters, including Wheatley (Stephen Merchant) and Cave Johnson (J. In the single-player campaign, the player controls protagonist Chell, awoken from suspended animation after many years, who must navigate the now-dilapidated Aperture Science Enrichment Center during its reconstruction by the reactivated GLaDOS, a powerful supercomputer. These gels were created by the team from the Independent Games Festival-winning DigiPen student project Tag: The Power of Paint. The game retains Portal's gameplay elements, and adds new features, including tractor beams, laser redirection, bridges made of light, and paint-like 'gels' accelerating the player's speed, allowing the player-character to jump higher or place portals on any surface. Before the game's release on Steam, the company released the Potato Sack, a second multi-week alternate reality game, involving 13 independently developed titles which culminated in a distributed computing spoof to release Portal 2 several hours early. Portal 2 was announced on March 5, 2010, following a week-long alternate reality game based on new patches to the original game. The retail versions of the game are distributed by Electronic Arts, while online distribution of the Windows and OS X versions is handled by Valve's content delivery service, Steam. It is the sequel to Portal (2007) and was released on Apfor Microsoft Windows, Mac OS X, PlayStation 3, and Xbox 360. Portal 2 is a first-person puzzle-platform video game developed and published by Valve Corporation.
