You are last test subject in Aperture Science after GLaDOS was destroyed. When you wake up, you can see testchamber 0 from Portal. But you escape from testchamber to supervisory room and escape from Aperture Science starts. But it won't easy´- there is only one way though testchambers of HPDT 2 sector... Developer team: Mapping: David Pavlík (Old testing Sector) Šimon Greško (Others) Textures: Šimon Greško (Thanks Tiim for advices) Beta testers: Will be soon :)