The "Perpetual Testing Initiative" has been expanded to allow you to design co-op puzzles for you and your friends!
User reviews:
Overwhelmingly Positive (856 reviews) - 98% of the 856 user reviews in the last 30 days are positive.
Overwhelmingly Positive (72,440 reviews) - 98% of the 72,440 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 (856 reviews)
Overwhelmingly Positive (72,440 reviews)
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40,027 reviews match the filters above ( Overwhelmingly Positive)
Most Helpful Reviews  In the past 30 days
62 of 64 people (97%) found this review helpful
45 people found this review funny
159.4 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
58 of 61 people (95%) found this review helpful
5 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
20 of 24 people (83%) found this review helpful
11 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
15 of 17 people (88%) found this review helpful
2 people found this review funny
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
11 of 12 people (92%) found this review helpful
2 people 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.
Was this review helpful? Yes No Funny
7 of 7 people (100%) found this review helpful
41.9 hrs on record
Posted: September 30
Valve's Swan Song.
Was this review helpful? Yes No Funny
7 of 8 people (88%) found this review helpful
171.0 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!
Was this review helpful? Yes No Funny
5 of 5 people (100%) found this review helpful
1 person found this review funny
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
7 of 9 people (78%) found this review helpful
1 person found this review funny
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.
Was this review helpful? Yes No Funny
3 of 3 people (100%) found this review helpful
2 people found this review funny
2.5 hrs on record
Posted: September 8
it hase puzzels so its good
Was this review helpful? Yes No Funny
Recently Posted
216.1 hrs
Posted: September 30
Note: This review contains some spoilers. Read at own risk!

In the co-op story ending, GLaDOS is scanning test subjects. The camera focuses on a monitor showing the scan results. It also acts as the credits, as the names are Valve employees who worked on the game/story.
While doing so, GLaDOS comments one some of their "results."
Here's what she commented on Valve employees (and other various Apperture Science products):
  • Adrian Finol: "Team player."
  • Alex Vlachos: "Horrible people skills."
  • Andrew Burke: "Never listens."
  • Andy Nisbet: "Never shares."
  • P-body: "Always sleeping."
  • Brian Jacobson: "Never on time."
  • Chandler Murch: "Inattentive listener."
  • Chris Douglass: "Awful attendance record."
  • Chris Welch: "Blabber-mouth."
  • Connor Malone: "Hates Mondays."
  • Dave Saunders: "Incoherent."
  • Derrick Genrich: "Insecure."
  • Doug Wood: "Procrastinator."
  • Eric Wolpaw: "Chronically late."
  • Jeff Unay: "Aggresive. I like that."
  • Joe Demers: "Timid."
  • Wheighted Storage Cube & Companion Cube: : "Feeds off the misery of others."
  • John Lippincott: "Lacks confidence."
  • Ken Banks: "Underestimates scope of work. They all do that."
  • Liam Lavery: "Moves lips while reading."
  • Mark Nagel: "Can't read."
  • Martin Otten: "Lacks empathy."
  • Matt Nickerson: "Cheater."
  • Matthew An: "Steals lunch from staff fridge."
  • Philip Saltzman: "Makes long lunches. [chuckles] Not for long."
  • 3 Packaged turrets: "Avoids responsibility."
  • Steve Bond: "Never completes work."
  • 3 Cores: "Laughs at own jokes. What a bore."
(Others that aren't on this list are either can't be heard coherently or can't be heard at all.)
It's almost like they're "accidentally" being mean to their employees!
Also like to point out that Gabe Newell is listed as "Global Emergency Archeologist" and Robin Walker (best known for co-developing Team Fortress & Team Fortress 2) as "Direct Human Fighter."
All of this came from here.
Helpful? Yes No Funny
101.9 hrs
Posted: September 30
Portal is portal.
Portal is Great.
Great is amazing.
And amazing is fantastic.
so portal is fantastic
Helpful? Yes No Funny
10.3 hrs
Posted: September 30
Amazing game. Period.
Helpful? Yes No Funny
17.2 hrs
Posted: September 30
this game is amazing....
Helpful? Yes No Funny
5.8 hrs
Posted: September 30
Not quite as good as the first, but still a good game that I would recommend mostly because the co-op mode is good enough to outweigh the somewhat lackluster single player.
Helpful? Yes No Funny
23.9 hrs
Posted: September 30
you can
Helpful? Yes No Funny
☠ HotBork ☠
1.8 hrs
Posted: September 30
i rate this game 9heils/10 gave me crippling autism but was all round enjoyable and lactose free ~b0rk of approval
Helpful? Yes No Funny
Fist Me Daddy! #ASMR
1.8 hrs
Posted: September 30
-Just play CO-OP with your friend... You will forget to use bathroom. Telling my experience. 10/10 It's masterpiece!
Helpful? Yes No Funny
Sanic The Headshot
1.3 hrs
Posted: September 30
Product received for free
I originally had this for xbox 360 and i loved it. even though it had no updates i played through this game over and over. this is by far my most favorite game of all time and i have a feeling it won't change anytime soon. The dark humor is great and the gameplay is slow pced but can add up to some pretty impressive speedruns.

Helpful? Yes No Funny
14.5 hrs
Posted: September 30
Beats the first at everything. Best puzzle game I've played and a fantastic ending.
Helpful? Yes No Funny