E3 Era

Around June in the year of 2010, the E3 Era began as an attempt to rush the game for a release trailer at that years E3. This Era mostly consisted of visual changes but included test chamber experimentation with some cut concepts. It began close to E3 of 2010, sometime after the Multi Core Era, and lasted until some point during December of 2010 when the game's content lock was put into place. The storyline was very close to the retail one, as this is where it began to take form. This Era would lead into the Retail version of Portal 2.

= Story Changes = After the Multi Core Era, the idea of multiple cores was scrapped in favour of having Wheatley be the sole Core main character, even if Adventure, Fact and Spare core appeared at the end, being homages to the Quint Sphere, Morgan Freeman Sphere and Aquarium Sphere respectfully. Another thing to note is the different voice actor for Wheatley, who was originally voiced by Richard Lord, an animator on the Portal 2 team.

= Differences = Almost all of the gameplay mechanics would have been the same as retail Portal 2, characteristic for this Era however was the cut Diversity Vents (Mechanic) testing element. Most changes were done asset-wise, such as differing Test Chamber Doors, Weighted Storage Cubes, Buttons, Faith Plates, Laser Emitters and the Lasers themselves. (See Gallery)

= Gallery =

= Trivia = 

= References =