Portal 2

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History

(2007-2008) Directed Design Experiments

(December 2008 - 2009) Experimental Era

(2009) Core Hub Era

The Core Hub Era demonstrates Valve's first attempt to create a proper follow-up to Portal after the cancellation of F-STOP. This era is named for its inclusion of a hub world that would have interconnected the game's six testing courses.

Gameplay

The player was able to progress through the testing courses in any order.

Story

The player reactivates GLaDOS and attempts to repair her by retrieving six personality cores.

(2010) Multi-Core Era

Multi-Core Era

Gameplay

Story

(June 2010 - December 2010) E3 Era

E3 Era

Portal 2 was demonstrated at E3 2010.

Gameplay

Story

Characters
  • GLaDOS
  • Wheatley
  • Morgan Freeman Sphere

(2011) Retail Era

Retail Era