But this was well deserved, the game was the first 3D puzzler ever. And the cake (that was a lie) was also heavily discussed. Back in the year 2007 when Portal was released on steam everyone interested in interesting games talked about it. Released on May 29, 2012, it is a live action interpretation of the comic Portal 2: Lab Rat, following the story of Doug Rattmann as he tries to save Chell and defeat GLaDOS. Before we start with the Portal 2 walkthrough lets do some short history (yes, really short). Aperture: Lab Ratt is a short, independent fan film produced by Synthetic PictureHaus, who also produced Aperture: A Triumph of Science and the 3-episode Aperture: Science Time.