ブルースクリーン
GLaDOS has been used several times for reveals in the "Portal" series. At E3 2008, GLaDOS's voice was utilized to reveal the "Portal" expansion "Portal: Still Alive". She has also been used to show "Portal 2" reveals; initially, a Blue Screen of Death image was used instead of a revelation of "Portal 2", showing the typical text found in a blue screen of death, but with GLaDOS's name at the top. In the reveal of the PlayStation 3 version of "Portal 2", GLaDOS's voice was used to introduce Gabe Newell, the co-founder of Valve at E3 2010, where he revealed "Portal 2" for the PlayStation 3. "Portal 2"s release was preceded by a collection of video games in a collection called "Potato Sack", which featured thirteen independently developed games. These games were all a part of an alternate reality, based on a cryptic narrative that suggested the awakening and relaunch of GLaDOS. Valve provided the developers access to their art assets to include "Portal 2"-themed content into them, and in some cases, McLain recorded new dialog specifically for these games. The alternate reality game ultimately led to "GLaDOS@Home", a distributed computing spoof, which prompted players to play the independently developed games to awaken GLaDOS ahead of schedule, effectively promoting the Steam release of "Portal 2" about 10 hours earlier than the official time.