MobyGoal achieved! Thanks to all contributors who helped us reach 250 documented ZX81 Games.


MobyRank MobyScore
Not an American user?


Aperture Science is a secret weapons research organization in competition with Black Mesa. Chell is a test subject at the "Enrichment Center" facility who awakens to find an A.I. construct called GlaDOS requiring some tasks to be completed. They are testing the Aperture Handheld Portal Device (aka Portal Gun) which is able to create portals in space, allowing Chell to move from one point to another without actually crossing the distance. Chell is promised cake should she be able to overcome the obstacles and perform the necessary tests.

She has to use her new gun to fling, jump and fall her way through 19 puzzles. These include obstacles but also androids that fire at her. Although the game is played as a first-person shooter, a large amount of strategy and puzzle-solving is involved. After completing the game, two additional game modes become available: Challenge where the game needs to be completed in either as little time, as few footsteps or as few portals as possible. The other mode is Advanced, where levels are made harder through additional obstacles.

Portal is set in the Half-Life universe and it is considered the spiritual successor to Narbacular Drop, some of whose original developers worked on this game. The Windows game can be bought stand-alone, while the Xbox 360 and PlayStation 3 versions are only available in The Orange Box.


Portal Windows It's usually a good idea to observe the environment before blasing random portals.
Portal Windows Here you jump on the platforms.
Portal Windows Play advanced bonus maps after finishing the game.
Portal Windows The promise of cake is overwhelming.

Alternate Titles

  • "ポータル" -- Japanese spelling
  • "포털" -- Korean spelling

Part of the Following Groups

User Reviews

Fun but extremely overrated casual-type puzzle game Windows Ferragus (48)
perfect design, but the fun only lasts a few good hours Windows Pixelspeech (955)
A fun game, but way too short Windows Mae Spencer (5)
An exercise in how to tell a story without cutscenes Windows snuf (2915)
Interesting idea, but not much of a game. Windows Tom Hell (173)

The Press Says

GamerDad Windows Oct 30, 2007 5 Stars5 Stars5 Stars5 Stars5 Stars 100
Common Sense Media Windows Apr 09, 2008 5 Stars5 Stars5 Stars5 Stars5 Stars 100
Macworld Macintosh May 12, 2010 5 Stars5 Stars5 Stars5 Stars5 Stars 100
Just Adventure Windows Nov 09, 2007 A 100
YouGamers Windows Oct 15, 2007 94 out of 100 94 PC Gaming Windows Mar 10, 2008 9.1 out of 10 91
1UP Windows Oct 10, 2007 9 out of 10 90
GameSpot Windows Apr 29, 2008 9 out of 10 90
Vgames Windows Oct 21, 2007 82 out of 100 82
Gaming since 198x Windows Nov 28, 2007 4 out of 5 80


Topic # Posts Last Post
Free until May 25th, 2010! (on Steam) 14 Adzuken (702)
May 23, 2010
Valve re-writes the ending. 2 Adzuken (702)
Mar 05, 2010
Steam can't so I can't play 3 Foxhack (12475)
Nov 20, 2009
Incorrectly grouped 5 Sciere (245478)
Feb 17, 2009
The Device Has Been Modified 2 DJP Mom (11120)
Jan 17, 2009
Portal and Steam 14 hydra9 (3853)
Apr 29, 2008
Some glitch videos... if you want to look at 'em. 3 Pseudo_Intellectual (44271)
Apr 15, 2008
2D Flash version of Portal 1 Pseudo_Intellectual (44271)
Jan 28, 2008
Still Alive 15 St. Martyne (3562)
Nov 07, 2007
Portal != Portal 4 Pseudo_Intellectual (44271)
Oct 25, 2007


German version

In some German versions, the colour of blood was changed to grey.


According to a boardroom projection in the game, GLaDOS stands for Generic Lifeform and Disk Operating System.


  • Eurogamer (UK)
    • December 28, 2009 - Game of the Year 2007
  • Games for Windows Magazine
    • March 2008 - #1 Game of the Year 2007 (PC Game Awards)
  • GameSpy
    • 2007 – Best Puzzle Game of the Year
    • 2007 – Best Character of the Year (for GlaDOS)
    • 2007 – Best Sidekick of the Year (for The Weighted Companion Cube)
    • 2011 – #8 Top PC Game of the 2000s
  • GameStar (Germany)
    • March 28, 2008 - Most Innovative Game Mechanics in 2007
Information also contributed by jean-louis and LepricahnsGold.

Related Web Sites

Contributed to by GTramp (31478), Sciere (245478), Kabushi (120828) and Dakota Bob (71)