We all know what happens; Chell deactivates GLaDOS, gets put in extended relaxation only to be reawakened years later to fight again and escape. But what really happened in Aperture Science during the intervening years? Have you ever wondered: Why does Aperture look so different in Portal 2?
There are holes in this story, questions left unanswered! Conversion is here to fill some of these holes. You will see completely new locations of the Aperture Science facility, and use new testing elements. You will travel with new companions and encounter new foes.