Portal

For the unrelated Commodore 64 game, see Portal (Commodore 64).

Portal is a first-person puzzle game developed by Valve Corporation and released in late 2007, first as part of The Orange Box for Windows, Steam, Xbox 360 and the PlayStation 3, and later as a standalone title for Windows and Steam. In the game, the player controls a female test subject named Chell in the Aperture Science Enrichment Centre. Guided by a female electronic voice-over of a supercomputer named GLaDOS, the player uses the Aperture Science Handheld Portal Device ("portal gun") to perform a variety of tests, such as creating portals to knock over turrets and other objects or moving to a previously unreachable area, so that the player may advance to the next test.

Portal's development team consisted of several people who attended DigiPen Institute of Technology and worked on Narbacular Drop, a freeware game that had similar concepts with Portal.

Portal is set in the Half-Life universe, and although there are no direct references to it in the game, there are many similarities between equipment in Portal and in Half-Life 2; turrets, for example, are quite similar in both games, and Portal also uses energy orbs identical to those in Half-Life 2. The backstory to Portal is explained in Half-Life 2: Episode Two, although the story behind the protagonist is explained throughout Portal.

Story

You awake as Chell, a woman equipped with implanted heel springs to help her fall from great heights, in the middle of a relaxation room. Immediately the mechanical voice of GLaDOS greets you. It's time to be tested as a human lab rat. Will the experiments go as planned?

Table of Contents

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Gameplay

• Controls

Walkthrough

1. Chamber 00
2. Chamber 01
3. Chamber 02
4. Chamber 03
5. Chamber 04
6. Chamber 05
7. Chamber 06
8. Chamber 07
9. Chamber 08
10. Chamber 09
11. Chamber 10
12. Chamber 11
13. Chamber 12
14. Chamber 13
15. Chamber 14
16. Chamber 15
17. Chamber 16
18. Chamber 17
19. Chamber 18
20. Chamber 19
21. Escape 00
22. Escape 01
23. Escape 02

Appendices

• Achievements
  • Camera Shy
  • Transmission Received
• Advanced Chambers
• Challenges
• Speedrunning
• Codes (console commands)
• Tips and advanced techniques

Portal: Still Alive

New features

Challenge Maps

1. Challenge Map 1
2. Challenge Map 2
3. Challenge Map 3
4. Challenge Map 4
5. Challenge Map 5
6. Challenge Map 6
7. Challenge Map 7
8. Challenge Map 8
9. Challenge Map 9
10. Challenge Map 10
11. Challenge Map 11
12. Challenge Map 12
13. Challenge Map 13
14. Challenge Map 14

Appendices

• Achievements