The "Perpetual Testing Initiative" has been expanded to allow you to design co-op puzzles for you and your friends!
User reviews:
Overwhelmingly Positive (811 reviews) - 98% of the 811 user reviews in the last 30 days are positive.
Overwhelmingly Positive (72,325 reviews) - 98% of the 72,325 user reviews for this game are positive.
Release Date: Apr 18, 2011

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Recommended By Curators

"Phenomenal, while it doesn't use it's space as well as the original, the Steam Workshop and mods allow for near infinite playtime worth every penny."

About This Game

Portal 2 draws from the award-winning formula of innovative gameplay, story, and music that earned the original Portal over 70 industry accolades and created a cult following.

The single-player portion of Portal 2 introduces a cast of dynamic new characters, a host of fresh puzzle elements, and a much larger set of devious test chambers. Players will explore never-before-seen areas of the Aperture Science Labs and be reunited with GLaDOS, the occasionally murderous computer companion who guided them through the original game.

The game’s two-player cooperative mode features its own entirely separate campaign with a unique story, test chambers, and two new player characters. This new mode forces players to reconsider everything they thought they knew about portals. Success will require them to not just act cooperatively, but to think cooperatively.

Product Features
  • Extensive single player: Featuring next generation gameplay and a wildly-engrossing story.
  • Complete two-person co-op: Multiplayer game featuring its own dedicated story, characters, and gameplay.
  • Advanced physics: Allows for the creation of a whole new range of interesting challenges, producing a much larger but not harder game.
  • Original music.
  • Massive sequel: The original Portal was named 2007's Game of the Year by over 30 publications worldwide.
  • Editing Tools: Portal 2 editing tools will be included.

System Requirements

Mac OS X
SteamOS + Linux
    • OS: Windows 7 / Vista / XP
    • Processor: 3.0 GHz P4, Dual Core 2.0 (or higher) or AMD64X2 (or higher)
    • Memory: 2 GB RAM
    • Graphics: Video card must be 128 MB or more and with support for Pixel Shader 2.0b (ATI Radeon X800 or higher / NVIDIA GeForce 7600 or higher / Intel HD Graphics 2000 or higher).
    • DirectX: Version 9.0c
    • Storage: 8 GB available space
    • Sound Card: DirectX 9.0c compatible
    • OS: MAC OS X 10.6.7 or higher
    • Processor: Intel Core Duo Processor (2GHz or better)
    • Memory: 2 GB RAM
    • Graphics: ATI Radeon 2400 or higher / NVIDIA 8600M or higher / Intel HD Graphics 3000
    • Storage: 8 GB available space
    • OS: Ubuntu 12.04
    • Processor: Dual core from Intel or AMD at 2.8 GHz
    • Memory: 2 GB RAM
    • Graphics: nVidia GeForce 8600/9600GT, ATI/AMD Radeon HD2600/3600 (Graphic Drivers: nVidia 310, AMD 12.11), OpenGL 2.1
    • Storage: 8 GB available space
    • Sound Card: OpenAL Compatible Sound Card
Customer reviews
Customer Review system updated Sept. 2016! Learn more
Overwhelmingly Positive (811 reviews)
Overwhelmingly Positive (72,325 reviews)
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39,980 reviews match the filters above ( Overwhelmingly Positive)
Most Helpful Reviews  In the past 30 days
37 of 38 people (97%) found this review helpful
29 people found this review funny
158.3 hrs on record
Posted: August 31
Now that I've gotten all the achievements and given up so much of my life to science, it's time to review this outstanding game.

♥ Witty and honestly perfect dialogue
♥ Memorable characters and references
♥ potatoes
♥ Amazing soundtrack
♥ Creative puzzles
♥ Co-Op
♥ Cute mutants
♥ Lemons and a snazzy Cave
♥ $60
♥ You can seriously replay this game over and over again, I'm living proof of it with 150+ hours
♥ Amazing community maps that you can always play if you want more pizzazz

♦ Neurotoxin
♦ Being called fat
♦ The cake is a lie
♦ Does not include friends for co-op (But there's always a companion cube for you lonely people)
♦ You can't eat the potato
♦ Birds

Okay but seriously, this game will forever stay in my heart. Its originality and engrossing storyline is why it's so beloved by others. No matter what kind of gamer you are, and no matter what kind of mood you're in, you will enjoy the gameplay. Just trust me, try this game. You'll be GLaD you did. <3
Was this review helpful? Yes No Funny
31 of 33 people (94%) found this review helpful
4 people found this review funny
51.8 hrs on record
Posted: September 8
No steam library is complete without this masterpeice
Was this review helpful? Yes No Funny
13 of 14 people (93%) found this review helpful
5 people found this review funny
25.5 hrs on record
Posted: September 7
Are you still there?

Lemons, m♥ron, portal, cube, gel, portal, think, think, think! You're fat. Portal. Logic. Think hard! Potato. Push the button. Don't push the button.

Target lost.
Was this review helpful? Yes No Funny
10 of 11 people (91%) found this review helpful
16.8 hrs on record
Posted: September 13
My first Portal game. Obtained in 2016.
immersive tutorial, great story, awesome gameplay.
Instantly bought the first one - no regrets.
Was this review helpful? Yes No Funny
7 of 8 people (88%) found this review helpful
1 person found this review funny
11.9 hrs on record
Posted: September 16
Portal 2 is even better than Portal
Portal 2 is another game on my "must play" list. Portal was already incredible, yet somehow Valve managed to make the sequel exquisite.

- Fluid, responsive controls
- Amazing puzzles, both for single player and co-op
- Great difficulty curve
- This time there is actually a story. We finally get to learn more about Aperture Science.
- Wheatley joins the party. In combination with GLaDOS, their unique personalities and humour just make Portal 2 incredible. Basically fantastic script and voice-acting.
- This is not just a remake of Portal. This time gels are added to put a unique touch on puzzles. Basically an upgrade in gameplay and difficulty.
- Co-op mode! Like single-player, the co-op mode is brilliantly designed, and addictively fun.
- Community-made maps (basically endless fun and challenges)
- Companion cube still loves you <3

- Still no cake
- You require a competent buddy for co-op

Valve really outdid themselves this time. There really isn't much else to say. The praise I gave in my Portal review is just as valid here, although it must be said that Portal 2 deserves even more praise. You would be a fool not to play Portal and Portal 2.
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5 of 5 people (100%) found this review helpful
170.5 hrs on record
Posted: September 23
I love this game so much. Like, I could play this game every day for the rest of my life because of how much it offers. I would play Co-op with anyone. I've beat this game 5 times and I've speedrunned it. If I can't stress how much I love this game, I want to state that I really love this game.

Ughh until I do a proper review, WHICH I WILL. I can only say that this is truly a masterpeice, and I have no complain about this game. This is in my opinion the example of a perfect game.

I've gifted this game nearly 10 times now. I've made it my tradition to gift Portal 2 to any friend I introduce to steam to, and let me tell you know, each one of them ends up being an loving portal fan.

Buy this game, no questions. It's meta critic of 96 and the most positively review steam game for a reason!
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5 of 6 people (83%) found this review helpful
15.8 hrs on record
Posted: September 4
Portal 2 is far more refined than its predecessor.

Better graphics. Granted the game did came out 4 years after.

Better humor. 81 min into the game I must have chuckled 4-5 times at GlaDOS's remarks.

Better physics. The cube and various objects **feel like** they bear actual weight this time.

Better puzzles. I no longer get disoriented solving them.

I actually care about Chell, that flying bot with blue eye and of course GlaDOS----this didn't happen while I was playing Portal.

While I'd gave Portal a borderline 6 / 10, I'm inclined to rate Porta 2 at least a 8.5 / 10.
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2 of 2 people (100%) found this review helpful
2.5 hrs on record
Posted: September 8
it hase puzzels so its good
Was this review helpful? Yes No Funny
2 of 2 people (100%) found this review helpful
27.2 hrs on record
Posted: September 8
You can build your ownn maps, which is good, thanks Valve
Was this review helpful? Yes No Funny
2 of 2 people (100%) found this review helpful
46.3 hrs on record
Posted: September 6
Portal 2. My good friend.
I will attempt to sum this game up as quickly as possible.
This game has a hilarious british personality core in it.
This game is one of the funniest story-rich games on the market.
This game has got adorable turrets.
This game has J.K. Simmons.
This game has exciting, brilliant gameplay.
This game has PORTALS, gosh dangit!!
10/10 well worth $20
Was this review helpful? Yes No Funny
Recently Posted
70.3 hrs
Posted: September 28
Product received for free
the end of the story is sad and happy in the same time
i cant stop playing it again and again and again its one of the best games i've ever played
Helpful? Yes No Funny
29.5 hrs
Posted: September 28
I went in one side and came out the other side. What more could I ask for?
Helpful? Yes No Funny
21.9 hrs
Posted: September 28
In One Sentence:

Solve well-designed puzzles with unique game mechanics while listening to two artificial intelligences and an eccentric CEO come apart at the seams.

My Opinion:
***** A top pick
**** I like it
*** I like it (with caveats)
** This wasn't for me
* I cannot recommend this to anyone


As with Portal, in Portal 2, you solve first-person, three-dimensional puzzles with the aid of a Portal Gun. This device can make temporary holes that connect to each other on various surfaces. Portal 2 also adds more game mechanics in the form of paints that can alter the properties of surfaces. You begin the game attempting to escape an abandoned test facility. However, the artificial intelligence guiding you through the facility comes up with a different plan. Primary game content took me about eight hours to complete. There is also a cooperative mode that took me about five hours.

What I Like About This Game:

+ puzzle design (challenging without ever being obtuse)
+ puzzle progression (tests build on each other)
+ Portal Gun mechanic
+ humor
+ cooperative play, yes!
+ foray into a Cold War era series of test chambers
+ built-in puzzle design tool

What I Don't Like About This Game:

- the style of humor used with the new artificial intelligence did not work very well for me
- greater number of 'dynamic' puzzles (which require more focus on timing the puzzles, rather than solving them)
- game tends to crash if you alt+tab out of it
Helpful? Yes No Funny
10.0 hrs
Posted: September 28
Great story , has multiplayer and workshop maps. Just a perfect sequel for Portal. The graphics are obviously the Half-Life 2 ones , just like many games by Valve which obviously brings higher realism.
Helpful? Yes No Funny
9.8 hrs
Posted: September 28
Its a good game but now im a walkthough for everybody
Helpful? Yes No Funny
18.3 hrs
Posted: September 28
A very clever game that near endless hours now that players can create levels.
Helpful? Yes No Funny
2.0 hrs
Posted: September 28
It's great
Helpful? Yes No Funny
4.7 hrs
Posted: September 27
One of my most favorite games on steam. (I have the game on console that is how I have beaten it before) If you played Portal, and liked it, then you will LOVE Portal 2 Portal 2 is a puzzle platformer, where you have to think how to solve the puzzles using portals to help you navagate through the test chambers of Apature science. It has an awesome co-op mode where you both have to use portals to help each other through various puzzles, be a jerk to one of your friends :). The story mode is also great with funny voice lines and twists and turns. Portal 2 always puts you mind to the test! Are YOU up for the challenge?
Helpful? Yes No Funny
Vigo Hallowblower
33.7 hrs
Posted: September 27
Where do I even start with this game!? This is without a doubt one of my favorite games of all time! This masterpiece has such a complex gameplay. The characters are amazing, the story is one of a kind, the style is breathtaking, the puzzles are sequenced perfectly. Let's hope that we'll get a Portal 3 and it will be VR
Helpful? Yes No Funny
Mari- Hoe
486.5 hrs
Posted: September 27
Possibly one of the BEST puzzle and story games out there. Great sequel to the game Portal. I love the new puzzle elements and ideas, as well as the characters. Good controls, and unlike Portal, it has Controller support (Portal probably has controller support, but in Portal 2 its easier to set up controller support). You can even make your own test chambers in the ingame editor!! (I love that personally because i HATE hammer.) Reccomended for anyone who loves story and puzzle games. Buy this.
Helpful? Yes No Funny