You know what is Portal? Portal here doesn’t mean web portal. It is puzzle games produced by Valve which need you to use your brain in order and unique way to solve part of the games.
The game primarily comprises a series of puzzles that must be solved by teleporting the player’s character and simple objects using “the handheld portal device”, a device that can create inter-spatial portals between two flat planes.
The most identical in Portal games is blue portal and orange portal and its handheld portal device (to create portal).