What it is
Portal 2 is Valve’s first-person puzzle-platformer, built around the portal gun’s ability to bend space. It returns to the ruined Aperture Science facility with a larger story, more varied test chambers, sharper writing and a complete two-player co-operative campaign. The Xbox 360 version launched in the UK on 21 April 2011, although the PC and Mac Steam release unlocked late on 18 April. It remains one of the most accomplished puzzle games available on Xbox hardware.
- Title
- Portal 2
- UK release
- 21 April 2011 on Xbox 360; Steam version unlocked late on 18 April 2011
- Platforms
- Xbox 360, Xbox One, Xbox Series X|S, PC, Mac, Linux and PlayStation 3
- Developer
- Valve
- Publisher
- Valve; Electronic Arts handled 2011 retail distribution
- UK price
- £14.99 or more on the current UK Xbox Store listing
- PEGI
- PEGI 12 — Bad Language, Violence
- Genre
- First-person puzzle-platformer and adventure
- Online mode
- Yes — two-player online co-op campaign, plus local split-screen co-op
- Critical reception
- 95/100 Xbox 360 Metascore; GameSpot 9/10
Story and setting
Portal 2 follows Chell after the events of the original game, as she is drawn back into Aperture Science’s automated testing complex. GLaDOS is still present, while the expanded cast includes Wheatley, a nervous personality core voiced by Stephen Merchant, and Cave Johnson, the eccentric founder whose recorded messages fill in more of Aperture’s history. The game moves beyond the familiar sterile test rooms into overgrown, collapsing and long-abandoned sections of the facility.
The story is delivered through environmental detail, carefully timed dialogue and a small cast of memorable artificial personalities. It is funny without relying solely on references to the first game, and its mystery gradually explains why Aperture looks the way it does. You can play without knowing Portal, but the sequel assumes you understand the basic idea of portals and benefits from the context of Chell’s earlier escape.
How it plays
The portal gun remains the central tool. Place an orange portal and a blue portal on suitable surfaces, then use momentum, gravity and perspective to cross gaps, redirect objects and reach otherwise inaccessible areas. Portal 2 expands the formula with excursion funnels, aerial faith plates, thermal discouragement beams, pneumatic systems and two types of gel: repulsion gel for bouncing and propulsion gel for speed. Each chapter introduces new interactions rather than simply making the rooms larger.
There is no conventional combat focus. Turrets, toxic hazards and other dangers exist, but progress comes from observing a room, understanding its rules and testing a solution. The best chambers make the answer seem obvious only after you have found it. The game also includes challenge modes, achievements and a separate co-operative campaign designed around two players controlling the robots Atlas and P-body.
Co-op and post-launch content
The co-op campaign is not a short bonus mode. It has its own sequence of test courses, mechanics and story, with puzzles that require players to coordinate four portals, buttons, timing and movement. Online co-op is supported, and the console version also includes local split-screen play. Communication matters more than reflexes, particularly when one player must trust another to open a portal or trigger a launch at the right moment.
Valve released the free Peer Review DLC for Xbox 360 in October 2011. It adds the Art Therapy co-op track, further story material involving Atlas, P-body and GLaDOS, single-player and multiplayer challenge modes, and leaderboards. On PC and Mac, the free Perpetual Testing Initiative added the Puzzle Maker and Steam Workshop support in May 2012. Valve later added co-op support to the community-created maps, creating an effectively open-ended supply of extra chambers. PC also received continued technical maintenance, including a February 2021 update with Vulkan support, controller improvements, rendering changes and fixes for Workshop and Linux issues.
Platforms, editions and UK price
Portal 2 originally released for Xbox 360, PlayStation 3, Windows PC and Mac, with Linux support later available through Steam. The Xbox 360 edition is listed by Xbox as playable on Xbox One and Xbox Series X|S, although it remains the 360 version rather than a native current-generation remaster. The Xbox Store also lists the free Peer Review add-on.
The current UK Xbox Store listing shows Portal 2 at £14.99 or more, depending on the store presentation and purchase route, with the game sold as a separate digital title. Original boxed copies were distributed in retail by Electronic Arts under its agreement with Valve, while Valve is the game’s developer and original publisher. Physical Xbox 360 copies are now a second-hand-market purchase, so prices vary by condition and retailer. The UK classification is PEGI 12 for bad language and violence.
Reception and Xbox performance
Portal 2 was received exceptionally well. GameSpot awarded it 9/10, while the Xbox 360 version holds a 95 Metascore on Metacritic from 66 critic reviews. The Guardian’s contemporary review praised its puzzle design, writing and standalone multiplayer story, describing it as one of the outstanding games of its period. The consensus was that Valve had expanded the original without losing the precision of its core idea.
On Xbox 360, expect a technically solid but distinctly older presentation. Contemporary comparisons found a 720p-era image, less anti-aliasing and a lower internal resolution before upscaling than the PC version, although the 360 build produced extra shadowing in some scenes. It remains perfectly readable and responsive for a puzzle game, but PC offers the best technical flexibility and the Workshop content. On Xbox One and Series consoles, the main advantage is convenience rather than a new visual upgrade.
Portal 2: your questions
Is Portal 2 backwards compatible on Xbox One and Xbox Series X|S?
Yes. Xbox lists the Xbox 360 version as playable on Xbox One and Xbox Series X|S. It is not a native current-generation remaster, so do not expect a new Xbox Series-specific graphics mode.
Does Portal 2 have online co-op?
Yes. Portal 2 includes a separate two-player online co-operative campaign, as well as local split-screen co-op. The two modes use the same co-op story and test courses.
Is Portal 2 included with Xbox Game Pass?
Portal 2 is not listed in the current UK Xbox Game Pass catalogue checked on 1 October 2026. The Xbox Store lists it as a separate purchase instead.
Does the Xbox 360 version have the Portal 2 level editor and Steam Workshop?
The Perpetual Testing Initiative, including the Puzzle Maker and Steam Workshop, was released for PC and Mac. Xbox 360 received the free Peer Review DLC, with extra co-op and challenge content, rather than the PC Workshop feature.
Do I need to play the first Portal before Portal 2?
No, but it is recommended. Portal 2 explains its basic mechanics clearly, while playing the original gives more context to Chell, GLaDOS and Aperture Science.
