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Portal (2007) is a puzzle video game using the Orange Box engine. Taking place in the mysterious Aperture laboratories, the game operates as a puzzle-based shooter, allowing you to create portals that link to one another on any flat and large enough surface.
The gameplay is similar to 
Narbacular Drop by Nuclear Monkey Software, an indie game that won the IGF 2006 Student Showcase. Members of the development team who created the game were hired by Valve in 2005.
Portal was later released on the 
Xbox 360 in 2008 as 
Portal: Still Alive which added diferent achivements from the Xbox 360 release of 
The Orange Box and also new levels from Portal: The Flash Version and was released on 
Portal Companion Collection later on.
In 2022, 
Nvidia released Portal with RTX, a remastered version of Portal developed by NVIDIA Lightspeed Studios (who also co-developed Portal Companion Collection for Nintendo Switch, and previously ported Portal to NVIDIA Shield devices) which takes advantage of newer hardware and adds ray-tracing support, PBR textures, new high-poly models and much more.
Content
- Portal (
portal) - Source 2013 shared (
hl2) - Source shared (
hl2) 
Source 2013 Singleplayer engine branch
Trivia
- For some reason, Valve decided to use the Beta version of Portal for screenshots on the Steam page.
See also
External links
- Portal article on Wikipedia
- EA Summer Showcase trailer: FileFront.com, GameSpot
- My Aperture Innovations (custom maps)