Portal is a puzzle-solving game in first-person perspective. Its storyline is tied to Half-Life universe, with the introduction of Aperture Science, rival of Black Mesa, and owner of the Borealis, discovered in Half-Life 2 Episode 2 by Judith. You wake up in a test center but you don't see anybody although there are observations rooms. You'll be give the Portal Gun, which can create portals. Glados, the voice leading you from room to room, seems very interested in you. And she promised cake at the end...


Your goal is to find a way throughout the game for exiting each room without hurting you by using the Portal Gun, which can create two portals and help you to find a way if you can't advance. By using it, you can modify the way of an energy ball, make cubes going to impossible places or even make high and fast jumps by creating several portals when falling.

This game is also known as Half-Life: Portal in North America.

Official URL

Official Site


The Steam Awards are accepting nominations, and Half-Life 2 is being targeted

You asked us Valve, so do it

Nov 25 at 11:39am, by Philip Moody | 3 comments
Portal may be getting an announcement soon after next week's meeting with Valve

The cake will soon be a lie

Sep 29 at 2:34pm, by Philip Moody | 6 comments
J.J. Abrams and Gabe Newell candid on making games, movies together in DICE keynote

"It's as real as anything in Hollywood ever gets"

Feb 06, 2013, by Rory Young | 5 comments
Valve responds to criticisms over erratic release schedule

"The point is not that we're schizophrenic..."

Jan 04, 2011, by Dany Argueta | 25 comments
Valve: Mac gamers accounted for over 11 percent of Steam purchases last week

Steam Hardware Survey to support Mac platforms starting next month

May 20, 2010, by Leo Chan | 2 comments

Latest Activity

Mar 30, 16 4:31pm

It's not that I took time to review Portal. In reality, I'm more at ease writing reviews for...

Monterey Jack
Aug 29, 15 2:58am

There must’ve been something in the air around Valve’s headquarters in 2007 because even as side...

Jul 4, 15 1:40pm

Ah, nothing like writing a review to a game that came out so long ago, eh? Well, why not, right?

Feb 9, 14 12:31am

First off, let me say that Portal is one of the best PC games that I’ve played. Portal is a...

Jan 27, 13 5:14am
added 5 new screenshots
Nov 8, 12 11:21am
I love how there's so many dubstep remixes on Youtube when there was only one song in he game! Portal
Jul 22, 12 8:51pm
A great start to a great series! a mad AI that is bent on destroying you through test chambers with a great plot twist! Portal
GLaDOS blogged
Jan 29, 12 8:51am

Time for weekly blog post!

In today's post, we're going to discuss Choosing a Good Test Subject.

To choose a good test subject, they must have several traits.

• Lack of the following personality flaws
- Cowardice
- Impaired motor skills
- Poor judgement
- Fear of:
o heights
o weights
o depths
o bullets
o fire
• Lack of or extremely low tenacity
• Lack of any mental or physical disorders (unless for specialized testing)
• Lack of superpowers or mutations
• Between the age of 15 and 35 (this may vary for non-human species).

Test subjects under the prior requirements are good for a standard testing environment. These test subjects will not develop schizophrenic traits, nor will they leave the testing area or attempt to kill you. By following these requirements for a test subject, you can have a safe, successful, and scientific test.

other portal portal 2 tips testing science
Oct 7, 11 10:04am
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Release Dates
  • North America:
    • Jun 25, 2013 (Linux)
    • May 12, 2010 (Mac)
    • Oct 9, 2007 (PC)
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