• Portal is a single-player Puzzle-Platformer developed by Valve Corporation. The game was released in a bundle package called “The Orange Box” for Microsoft Windows and Xbox 360.
• Just like other games developed by Valve, for example Half-Life and Left 4 Dead series , Portal is an extremely original and eye appealing game. The game consists primarily of a series of puzzles that must be solved by teleporting the player’s character and simple objects using the Aperture Science Handheld Portal Device.
• What is new is that this game is getting a sequel very soon. From the technical side Protal 2 looks amazing and it will be packed with handful of new puzzles. The only thing that you can now do is wait

Here is the three part demo from E3-2010. Enjoy!