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Antichamber logo.png
Designer(s)Alexander Bruce
Composer(s)Siddhartha Barnhoorn
EngineUnreal Engine 3
Platform(s)Microsoft Windows, Linux, OS X
Release31 January 2013[1]

Antichamber is a first-person puzzle-platform game created by Australian developer Alexander "Demruth" Bruce. Many of the puzzles are based on phenomena that occur within impossible objects created by the game engine, such as passages that lead the player to different locations depending on which way they face, and structures that seem otherwise impossible within normal three-dimensional space. The game includes elements of psychological exploration through brief messages of advice to help the player figure out solutions to the puzzles as well as adages for real life. The game was released on Steam for Microsoft Windows on 31 January 2013.[1] A version originally sold with the Humble Indie Bundle 11 in February 2014 added support for Linux and OS X.

Gameplay and plot[edit]

A gallery room in Antichamber demonstrating the use of the impossible object geometries; looking face on to each wall of these individual cubes will show a different scene. The player's manipulation "gun" is shown in the bottom right.

In Antichamber, the player controls the unnamed protagonist from a first-person perspective[2] as they wander through levels.[3] Regarding typical notions of Euclidean space, Bruce has stated that "breaking down all those expectations and then remaking them is essentially the core mechanic of the game".[2]

The player starts in an antechamber that contains four walls. One is a diegetic menu to set the various game options as well as a countdown timer starting at ninety minutes. A second wall provides a map of the game's space that will fill in as the player visits specific rooms, highlighting passages the player has yet to explore, and allows the player, upon return to this room, to jump to any room they've visited before. A third wall shows a series of cartoonish iconographs and obfuscated hint text that are added as the player finds these on walls of the puzzle space. The fourth wall is a window, showing the ultimate goal, the exit from the space, which the player must figure out how to get to.

Puzzle elements in various chambers involve manoeuvring themselves around the spaces, where level elements can change after passing certain points, or even based on which direction the player is facing when traversing the level. Laser beams are used as mechanisms to control various doors; these may either require the beams to be blocked or unblocked, and many doors require multiple beams to be in their proper state to open. Initially, the player can trigger these themself. Later, the player gains access to a series of coloured "guns", each which helps the player access more of the space. Initially, the gun can pick up any number of small cubes, storing them, and then place them on surfaces; these can be used to block the aforementioned laser beams, or used as platforms for the player to get over obstacles. Other guns can be used to "grow" new blocks by placing blocks out in specific patterns, to direct a connected series of blocks towards an objective point, and to create en masse and fill an area with blocks; later guns retain the abilities of the earlier ones. Certain areas in the space are dead zones that remove any blocks stored in the gun or prevent blocks from moving through them. After most puzzles are signs with the aforementioned iconographs which can be activated to give a hint about the completed puzzle. At any point, the player can jump back to the first room, and use the map to navigate to other areas; this resets any progress made on specific puzzles though the player retains the guns they have obtained.

Upon completing a core set of puzzles, the player can then access the exit door, upon which they start to chase down a black cloud-like shape, using all the solving techniques they have learnt before. Eventually they are able to capture the cloud as a black cube within their gun, and enter a final, more expansive area, where they return the shape to a waiting shell. The shell creates a structure around it – similar to the game's logo – and then sucks everything around it into its centre, sending the screen to black and ending the game.


Alexander Bruce at the 2010 Game Developers Conference

Antichamber started as early as 2006 as Bruce's idea for an arena combat game based on expanding the mechanics of the game Snake into a multiplayer experience. Full development of the game, initially called Hazard, did not start until 2009 and continued into 2010.[4] Bruce developed the game using UnrealScript with the Unreal Engine 3.[4] As Bruce iterated through its design, he dropped the combat portion and chose to focus more on a single-player puzzle game along with the psychology of the puzzles, eventually adding the subtitle "The Journey of Life" in 2009.[3][4][5] Part of this change came about how he was able to create Impossible Object spaces within the Unreal Engine, which came about as a result of a "rookie error" in coding.[6] Bruce recognised that there was a single-player game behind creating spaces and puzzles where the player would have to work out how the rules work, and expanded the game in that direction.[4] Bruce said in a 2011 interview with Kotaku that "the game started off as being all about geometry... I needed to find a way to represent that [non-physical geometry] to players... so I needed to work out why we would need this non-physical geometry in the world and it took me a couple years but after combining geometry and space and perception, I realised that the real reason that this game is interesting and is working is because it's about psychology."[2] As he worked out puzzles, he found that injecting philosophical ideas helped to lead to puzzle designs or otherwise augment established puzzles, and made that part of Antichamber's approach.[4] The game's simple art style was partially to distinguish the game from other Unreal Engine games, while also to aid in masking the work behind the inverse lighting system used in the game.[4]

On 2 April 2012, Antichamber became the seventh game to receive funding from the Indie Fund with Bruce citing the award as "finishing funds" to ensure the game can be released in 2012, and was ultimately released in January 2013.[7][8]


The soundtrack for Antichamber consists of ambient music composed by Siddhartha Barnhoorn.[9] The music evolves over the course of the game, starting with nothing more than one ambient layer in the first level and gradually progressing into a complex soundscape. In an interview with, Barnhoorn revealed that the soundtrack comprises sounds from various guitars, the shakuhachi, the koto, and synth pads. In addition, Barnhoorn stated that the non-synth sounds are digitally manipulated "here and there in order to make the sounds a bit longer than they would appear naturally".[10] Antichamber Suite, a track consisting of music from the game, was released via Bandcamp on 13 February 2012.[11] The track was also featured in the Nubuwo Debut Bundle released 2 March 2012.[12] The full soundtrack was released on 18 February 2013.[13]



Antichamber was well received by critics prior to its commercial release. In 2009 the game was featured in the showcase at the Tokyo Game Show Sense of Wonder Night, and was a finalist in the Independent Games Festival China.[24] In 2010, indiePub Games's third Independent Game Developers' Competition awarded Antichamber the prize for Technical Excellence.[25] In 2011 the game was as a finalist in GameStop's Indie Game Challenge,[26] and in the Make Something Unreal competition (run by Epic Games), the game won 1st for Best Level for a Mod in Phase 4, 3rd for Best non-FPS Mod in Phase 4, and 5th place overall in the grand finals.[27][28] During the 2011 Independent Games Festival, Antichamber wound up as a finalist for the Nuovo Award, which recognises "abstract, short-form, and unconventional game development".[29] Also in 2011, the game made it into the PAX 10 and finished as a finalist in the IndieCade festival.[30][31] In 2012, Antichamber took home the Technical Excellence Award at the Independent Games Festival.[32]


Antichamber has received critical acclaim, with score aggregators Metacritic and GameRankings giving overall scores of 82/100[15] and 83.70%[14] respectively.

Most reviewers praised the level design and puzzles in the game. Game Informer wrote that "I rarely ever felt stuck or frustrated by a lack of progress – a testament to Antichamber's pacing and design",[17] and GameTrailers said, "The true star of Antichamber is its level design."[19] PC Gamer described the game as hosting "moments of transcendent beauty and vignettes that engage your brain on a level few games attempt"[22] and IGN called the puzzles "expertly crafted and wonderfully inventive challenges."[21]

Within two months of its release on Steam the game sold more than 100,000 copies, with most of the sales coming during the first week of release.[33]

See also[edit]


  1. ^ a b "Alexander Bruce Presskit – Antichamber". Retrieved February 6, 2013.
  2. ^ a b c "8 1/2 Minutes of Antichamber My Favorite Game of PAX 2011. It's 'First-Person Escher.'". August 29, 2011. Retrieved April 29, 2012.
  3. ^ a b JC Fletcher (July 6, 2011). "Indie game 'Hazard: The Journey of Life' is now Antichamber". Joystiq. Archived from the original on July 16, 2012. Retrieved April 29, 2012.
  4. ^ a b c d e f Carless, Simon (February 3, 2011). "Road To The IGF: Alexander Bruce's Hazard: The Journey Of Life". Game Set Watch. Retrieved September 23, 2013.
  5. ^ Conditt, Jessica (February 1, 2013). "Antichamber: How a game of impossible spaces came together". Engadget. Retrieved May 26, 2013.
  6. ^ "How do you run and jump in warped space?". CultureLab. Archived from the original on October 15, 2017. Retrieved February 6, 2013.
  7. ^ "Indie Fund Now Backing Antichamber « Indie Fund". April 2, 2012. Archived from the original on October 15, 2017. Retrieved April 29, 2012.
  8. ^ Conditt, Jessica (April 9, 2012). "Antichamber and Indie Fund: A match made in M.C. Escher's basement". Joystiq. Archived from the original on March 30, 2013. Retrieved April 29, 2012.
  9. ^ "Siddhartha Barnhoorn | Composer for Film | Sound Designer". Retrieved April 29, 2012.
  10. ^ "The Weblog Siddhartha Barnhoorn Q&A: Antichamber Suite". February 27, 2012. Retrieved April 29, 2012.
  11. ^ "Antichamber Suite | Siddhartha Barnhoorn". February 13, 2012. Retrieved April 29, 2012.
  12. ^ "Nubuwo Debut Bundle: adventures in videogame audio by Jeriaska ジェリアスカ — Kickstarter". Retrieved April 29, 2012.
  13. ^ "Antichamber; Siddhartha Barnhoorn". Retrieved September 20, 2016.
  14. ^ a b "Antichamber for PC – Gamerankings". Retrieved March 27, 2013.
  15. ^ a b "Antichamber (PC)". Metacritic. Retrieved March 27, 2013.
  16. ^ "Review: Antichamber". January 31, 2013. Retrieved March 27, 2013.
  17. ^ a b "A lesson in originality – Antichamber – PC". Game Informer. January 31, 2013. Retrieved March 27, 2013.
  18. ^ "Antichamber Review". January 31, 2013. Archived from the original on April 5, 2013. Retrieved March 27, 2013.
  19. ^ a b "Antichamber – Review". February 12, 2013. Retrieved March 27, 2013.
  20. ^ "Antichamber Review – Giantbomb". February 12, 2013. Retrieved March 27, 2013.
  21. ^ a b Gallegos, Anthony (January 31, 2013). "Antichamber Review – IGN". Retrieved March 27, 2013.
  22. ^ a b "Antichamber Review – PCGamer". PC Gamer. January 31, 2013. Retrieved March 27, 2013.
  23. ^ "Antichamber review: mobius trip – Polygon". Polygon. January 31, 2013. Retrieved March 27, 2013.
  24. ^ "17–19 November 2012︱Shanghai International Convention Center︱Shanghai, China". April 12, 2012. Retrieved April 29, 2012.
  25. ^ "3rd Independent Game Developers' Competition Awards Announced". indiePub Games. October 7, 2010. Archived from the original on June 7, 2012. Retrieved April 29, 2012.
  26. ^ "Hazard: The Journey of Life". Indie Game Challenge. Archived from the original on May 29, 2012. Retrieved April 29, 2012.
  27. ^ "Make Something Unreal: Phase 4 Winners". Archived from the original on May 1, 2010. Retrieved April 29, 2012.
  28. ^ "Make Something Unreal: Final Winners". Archived from the original on May 24, 2010. Retrieved April 29, 2012.
  29. ^ "News – 2011 Independent Games Festival Reveals Nuovo Award Finalists". Gamasutra. Retrieved April 29, 2012.
  30. ^ Conditt, Jessica (July 9, 2011). "PAX 10 says these are the best indie games". Joystiq. Archived from the original on October 21, 2012. Retrieved April 29, 2012.
  31. ^ "2011 Festival :: IndieCade – International Festival of Independent Games". IndieCade. Archived from the original on December 7, 2011. Retrieved April 29, 2012.
  32. ^ "The 14th Annual Independent Games Festival Finalists". April 10, 2012. Retrieved April 29, 2012.
  33. ^ McElroy, Griffin (March 20, 2013). "Antichamber passes 100K sales mark on Steam". Polygon. Retrieved March 20, 2013.

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