Both Portal games take place in the fictional "Aperture Science Enrichment Center". Aperture Science was founded by Cave Johnson (voiced by J.K. Simmons) and originally sought … See more

The concept of Portal came from Narbacular Drop, a student project from the DigiPen Institute of Technology. The game included the aspects of placing portals on any flat … See more

Potato Sack
The Potato Sack was an A.R.G (alternate reality game) conceived by Valve and 13 indie video game developers as a prelude to the release of … See more

Portal: Prelude
Portal Prelude is a 2008 single-player mod that takes place before the events of Portal. A remastered version using Nvidia RTX Remix … See more

The player controls the main character (Chell in both single player campaigns, or Atlas and P-Body in the cooperative campaign) from a first-person view, running, jumping, and interacting with switches or other devices. The player-characters are able … See more

Portal
Portal was initially released in October 2007 as part of a compilation game called The Orange Box, alongside Half-Life 2 and its two episodes and Team Fortress 2. Valve considered including Portal as a bonus feature of … See more

• During Portal, the player explores areas outside of the test chambers where scrawled messages left by Rattmann and others warn of GLaDOS' deception. In particular, while … See more