Could a signal from another world have been kept secret for 40 years? Navigate a strange 3D database and work with other players to piece together what happened. Discuss your way through fragments of found footage films, journals and documentary clips about space.
User reviews: Mixed (124 reviews)
Release Date: Aug 7, 2014

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Recommended By Curators

"What's most fascinating about this is how they used Full Motion Video to make film interactive by focusing on the discussion it provokes between people."
Read the full review here.


“A complex story about murder, particles and electronic music.”

“It’s approach to multiplayer gaming feels like a slice of the future.”
Rock, Paper, Shotgun

“One of the first ever online multiplayer story games, where the main gameplay mechanic is not combat -- it's discussion”

About This Game

Cloud Chamber is a Massively Multiplayer story game.

Explore a mysterious 3D database.

Investigate and discuss story fragments with other players.

Piece together what happened from fragments of found footage, secret journals and astrophysics documentary.

In Cloud Chamber, the science is real; the story is fiction, and the truth about Space unknown.

Starring Gethin Anthony (Game of Thrones) and Jesper Christensen (Casino Royale).

The story

Players collaborate with each other to explore, investigate and discuss the fragments of information they collect on their journey through the dataworld, writing the story themselves of a young scientist, Kathleen Petersen, who risks her sanity and betrays her father to save humanity from itself.

Kathleen is forced to choose between loyalty to her father or to betray him and everything she has believed to be true. Her decision will not only determine the Petersen Institute's future, it will impact all of humanity itself.

Was Kathleen's mother Murdered?

Is Kathleen Going Mad?

What Is the Signal?


  • Experience a unique ”found footage” story that combines emails, photographs, maps, diagrams, fiction film, electronic music and documentary films from the European Space Agency into one coherent story.
  • Navigate surreal 3D levels between the parts of the story.
  • Piece together a fragmented story with more 150 story fragments spread over 10 unique levels.
  • Cooperative multiplayer: analyse & discuss the content with other players to understand what happened.
  • Gains access to locked parts of the story by evaluating other players’ theories.
  • Evaluate other players’ explanations; upvote the good, downvote the bad.
  • Make up your own mind: present your theories to other players and get their feedback.
  • Internationally acclaimed actors – Gethin Anthony (Renly Baratheon from Game of Thrones) and Jesper Christensen (Casino Royale, Quantum of Solace).
  • Film fragments filmed by the team behind the original The Killing.
  • More then 30+ movies from the European Space Agency integrated in the storyline.

System Requirements

    • OS: Microsoft Window 7
    • Processor: 1.8Gz Dual Core Processor
    • Memory: 2 GB RAM
    • Graphics: DirectX 9 compliant video card with Shader model 3.0 support. Radeon R7 240 2GB or NVIDIA GT 630 2GB
    • DirectX: Version 9.0
    • Network: Broadband Internet connection
    • Hard Drive: 5500 MB available space
    • Sound Card: Integrated
    • Additional Notes: Cloud Chamber uses QT Lite, which should auto install with the game.
    • OS: Microsoft Windows 7
    • Processor: 2.4 Gz Quad Core Processor
    • Memory: 4 GB RAM
    • Graphics: DirectX 9 compliant video card with Shader model 3.0 support. Radeon HD6850 or NVIDIA GeForce GTX 460
    • DirectX: Version 9.0
    • Network: Broadband Internet connection
    • Hard Drive: 5500 MB available space
    • Sound Card: Integrated
    • Additional Notes: Cloud Chamber uses QT Lite, which should auto install with the game.
Helpful customer reviews
11 of 11 people (100%) found this review helpful
1 person found this review funny
16.9 hrs on record
Posted: March 19
I put 16 hours into this game and I greatly enjoyed it. I'm going to give it a thumbs up because I think it's good, but I actually DON'T recommend it to new players...

First of all, what exactly is Cloud Chamber? Well it's really more of story than a game. The story is told over 10 chapters, each of which contain a series of story nodes. Each node could be a video clip (uses real actors - Renley Baratheon from Game of Thrones is one of the lead characters!), photographs, transcripts etc.

One of the things that is quite unique is in the way these nodes are delivered. In each chapter you traverse this odd sci-fi landscape going from node to node and it isn't linear. Two players are unlikely to take the same course through the game. Thus what gets delivered is little snippets of the story out of order and you find yourself trying to piece together the timeline and that's what makes it interesting and makes you want to keep going to find out what happened.

Also, another thing I have to mention is the soundtrack - it's superb. It's different in each chapter and it just merges in with the game so well really giving it a great atmosphere.

But here's the problem... in each chapter only around 2/3 of the story nodes are actually available at the start. In order to unlock the rest and thus get the full story you need to interact with other players. This works rather like a social network such as Facebook. Each story node has an attached discussion area where you comment on the node, rate up others comments, reply and so on. But in order to unlock the hidden nodes you need to get a certain number of likes / comments from other players per chapter.

This wouldn't be a problem if it was an active game but it isn't any longer. I got Cloud Chamber in a bundle around a month ago and at that time there were quite a few players and plenty of discussion. But I took my time and now, some weeks later, by the time I got to the final chapter there were just 2 active players on that chapter. We were messaging each other, replying to each others comments just so we could get through it and this felt somewhat artificial.

Having said that, yu can still get a large part of the story from the unlocked nodes. You could play through from chapter 1 -10 completely ignoring the social stuff in probably an hour or two and you wouldn't be missing that much. In a few of the later chapters the locked nodes were actually very disappointing; they used a lot of clips from science programs and it started to feel like I was back in school. This felt like low value filler content.

Finally, the ending. I won't spoil it of course but I finished the game feeling unsatisfied. As I went through the final nodes I was thinking "is this it?", and it didn't feel finished. Many questions were left unanswered which was quite frustrating.
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10 of 11 people (91%) found this review helpful
16.0 hrs on record
Posted: December 3, 2014
Cloud Chamber is an enjoyable game, but it comes with an expiration date.

The game's premise is simple enough: A documentary crew filming at a prestigious research institute stumble upon a conspiracy to cover up a world-changing discovery. When something happens to the institute director's daughter, the crew posts all their multimedia online and enlists the online community to analyze and solve the mysteries surrounding the institute.

The gameplay is unlike most adventure games out there. The player navigates "server nodes" of crew's data (each node containing a film clip, scanned document, or photo), unlocking them sequentially. This gradual approach builds tension well. Like Lost's slow reveal in early seasons or House of Leaves, the player is left to speculate about the conspiracy as they receive new pieces of information. They can discuss it with other players via the data server's embedded "social media app". The buildup is slow, but satisfying.

This is also the game's major shortcoming: The game is fundamentally a multiplayer experience simulating a social media platform, and the player requires "upvotes" from other players to advance. Each node has an associated message thread in which players can reward particularly insightful comments about the node's media clue. Advancement depends on other players, and there will come a point when the player base is too small for anyone to proceed through the story.

Overall, a good conspiracy story that builds and maintains suspense. A little on the slow side for those seeking fast paced storytelling. 7/10
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8 of 9 people (89%) found this review helpful
16.1 hrs on record
Posted: January 28
This review is based on 8 hours of play investigating 2 of 10 chapters, and reviewing all of the multimedia content.

If you ever wanted to be in an episode of X-files, either as sceptic or believing investigator, Cloud Chamber is for you. I learned something about astrophysics, too.

You get a case with paranormal indications, presented in the most confusing way possible, through over an hour of self-produced footage split into over 30 clips, almost another hour of material mostly taken from ESA (another 30 clips), and 120 documents to read and view . This is all organized in connected nodes set in a 3D-landscape, which restricts the order in which you can view all of this material (unless you know how to operate explorer and have an image viewer and a mp4 player such as VLC). Attached to each node is also a discussion board, where you can comment on the material and rate other players' comments, and if enough people like (or dislike) your comments, you can then access a "restricted" node on each of the 10 levels.

I scrutinize everything and look stuff up on the web on my own, so it is surprising that reading the comments still does give me new insights. The temptation to just leave the shackles of the 3D navigation system and just read all of the content directly is always there: it is so much more convenient if you want to view or freeze-frame a certain clip to be able to choose it directly from my playlist than to take the time to navigate the game interface. Given that the premise of the game is that suppressed information is being made public through the underground, one wonders why it isn't more easily accessible. If Wikileaks had operated that way, it would have faded into obscurity rather quickly.

That said, I'd rate the material as "advanced amateur production"; while the acting is good and the makers got access to some amazing locations, including a big anechoic chamber and the roof of the Radisson in Copenhagen, the distortion effects permeating the game are more aesthetic than realistic, which is difficult to disbelieve in a game that encourages you to investigate the smallest minutiae in the material. Given the low price of the game, that is still quite ok with me, actually.

Note that the ending is open: some mysteries are resolved, others are not.

I don't regret the purchase; if you like good amateur productions and don't mind navigating an interface and aesthetics that are more stylish than functional, and would like to fictionally investigate the paranormal (using the social features is optional), I recommend this game to you as well.
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6 of 7 people (86%) found this review helpful
3.5 hrs on record
Posted: December 12, 2014
Part YouTube, part Facebook, part FMV game, part adventure game.

Cloud Chamber is hard to describe and hard to recommend unless you like experiencing something different even if that something different doesn't always seem to work.

It's a multiplayer social game where you watch videos, comment on other peoples posts, and read snippets of information to piece together the mystery of a signal of unknown origin.

Oh yea, it also has an awesome electro soundtrack.

Full review:
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8 of 11 people (73%) found this review helpful
1.9 hrs on record
Posted: February 15
The game is good for people who like to watch videos and discuss them. Your comments get likes ( but I was giving them only for archvement). For others this game can be boring ( like for me). 6/10
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3 of 3 people (100%) found this review helpful
20.2 hrs on record
Posted: March 5
A really hard one to review.
It's more of a "make your own theory" about what's going on and discuss it with other folks from the community.
If you are into that kind of experimental game, well you will surely enjoy it.
Tons of sci-fi elements and even more real world facts about science. :)
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5 of 7 people (71%) found this review helpful
31.8 hrs on record
Posted: December 18, 2014
A great story, and a welcoming community. If you loved rational-yet-esoteric TV show LOST to the end and enjoyed above all researching and discussing the mysteries, you need to play Cloud Chamber right now.
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8 of 13 people (62%) found this review helpful
12.5 hrs on record
Posted: December 24, 2014
I really wanted to like this game. It has a nice, esoteric sci fi plot, and a great broken narrative which you as a player must gradually piece together from fragmented pieces of information like videos, emails etc. etc. The probelm that I have with the game does not lie in its storyline, or even the method of delivery. It's in the mechanic by which you need to unlock additional content. You see, if you just play through the game, you'll get about half the story. The rest is uncovered by unlokcing extra nodes along the way. Not a bad concept, but the probelm is that the way you unlock these nodes is through the use of discussions with other players. Now, on the surface this sounds like a good dynamic; you offer your thoughts on a node, you contribute to discussions which are already underway, and as you do so, you unlokc content. The problem is that it's difficult to really add anything new to the discussions. Most of the salient points have already been discussed, meaning that any contribution you attempt will sink to the bottom and go largely unread or unreplied to by other players. I appreciate that people need to contriobute in order to get the most out of the game, but in reality this has left me sat here with half the content stuiill locked, and no satisfying conclusion to the story.
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9 of 15 people (60%) found this review helpful
10.3 hrs on record
Posted: November 28, 2014
A very strange "game" in that it's not really a game as there are no game elements. It's not quite an interactive movie, in the classic sense, either. Instead it's a story told through video clips and images, unlocked in a non-linear order, in which progress is made solely and totally through interactions on bulletin boards. This makes the "game" more of a social experience than anything else, but also closes it off to those who have little to say or little interest in interacting through such media to discuss the clues into figuring out what's going on. The end of the whole story, deliberately left vague, is perhaps disappointing, not so much because of the vagueness itself, but that a few loose ends could have been better tied up while still leaving the primary focus up for discussion and speculation. While an interesting idea, it seems like it could have been implemented better with some allowance for those who are less intersted in the social aspects and to not let people get stuck while just waiting for others to like/comment on their posts in order to unlock further nodes.
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3 of 4 people (75%) found this review helpful
17.5 hrs on record
Posted: February 6
Well, it is a hard game to review.

While it technically is a game, it's more of a discussion between players, while watching videos, reading documents or theorizing about what happened.

I would not really call it an investigation game, since so far, there seems to be no clear cut as to what happened.

The game is based around discussing the pieces (videos, documents, e-mails, screenshots etc) that are present.

I guess the game could be considered as an ARG. As such, it is not a game for everybody. Not everyone will like it.

It is slow (as in pace wise), or fast if you wish it to be. It depends on how long you spend on each items, and how involved you decide to go on some discussions (you can technically ignore/not discuss a lot of nodes).

There's no QTE, there's no combat, only interactions thru discussion with other players.

It is a great game if you do not wish to get stressed, and simply want to watch or read things, while chatting with other players. It is to be noted, that unless you manually add players on steam, you'll not have any way to know if someone is online in the game, or have a live chat with any of them, which is in my opinion, the only downside of an investigation game :).
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3 of 4 people (75%) found this review helpful
1 person found this review funny
2.3 hrs on record
Posted: April 15
Facebook simulator 2015
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5 of 8 people (63%) found this review helpful
29.9 hrs on record
Posted: January 7
This game is unique.
It's a mix of play detective with a touch of facebook posting. You get to advance if your contributions towards the investigation are valuable for the commuity. I loved the journey. Throughiut the game I saw fellow investigators make such interesting remarks, gamers that player this game were truly sucked in by its universe.

The presentation of the game is gorgeous. The music is also excellent.

If you are into narrative games and you are looking for something new, this is it.
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5 of 8 people (63%) found this review helpful
0.2 hrs on record
Posted: January 27
I bought this because I had a 50% off cupon and the name sounded interesting.

My god, do I regret that. It's apparently supposed to be a mystery/puzzle game crossed with social media, where you work together with other people as clueless as you are about everything, or worse, people that are farther along and drop spoilers (though they do kill those posts fast).

I can only recommend this game if you enjoy beating your head against a metaphorical brick wall.
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5 of 8 people (63%) found this review helpful
5.7 hrs on record
Posted: December 18, 2014
A very interesting story, takes a few days, but you can 100% it, as long as you actually use your brain and try to figure out what is going on
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1 of 1 people (100%) found this review helpful
17.9 hrs on record
Posted: May 9
this game is something very different - its probably not really a game in the traditional sense ... its hard to describe. its more like a fragmented movie ....
unusual,mysterious,fascinating... if you like science and mysteries you will enjoy this.

it uses a revolutionary system - similar to a social network...and it works quite well ! its actually pretty awesome and can make for some brilliant guessing fun.

odd and brainy but recommended.
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1 of 1 people (100%) found this review helpful
1.7 hrs on record
Posted: March 10
I'm sure the game is great except for NEEDING quicktime to run it. . . WHY? Was apples god awful video codec REALLY needed? because I'm not about to install the bloatware that is quicktime or the shady unsupported quicktime lite just to play a game. I can't comment on gameplay but gets a thumbs up because it's one of the only of it's kind I've seen. with that said all I saw of the game is "quicktime is required please download quicktime, quicktime LT or exit game".
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1 of 1 people (100%) found this review helpful
7.8 hrs on record
Posted: April 5
A complete new experience to get into a mysterious story by discussing scenes via social media
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2 of 3 people (67%) found this review helpful
30.2 hrs on record
Posted: February 19
Do you enjoy mystery series?
Did you ever get really caught up in an ARG?
Did you ever spend hours falling into a Wiki wormhole?
Did you put way too much time into overanalyzing every episode of LOST?
Do you enjoy taking notes and putting together timelines in order to make sense of a complex story?

If you can answer "yes" to any of these questions, than I highly recommend Cloud Chamber, a unique story-driven MMO focused on theorizing about and trying to make sense of a large number of mysterious video clips and documents.

While it is possible to enjoy the game mostly passively, i.e. by watching the content and reading other people's theories, the real fun begins once you get involved and try to unravel the mystery by yourself.

Cloud Chamber does not have a huge playerbase and it might take some time for your posts to generate some discussion, but I would argue that this game is best enjoyed at a leisurely pace, allowing for what you've seen to sink in and giving you time to make some connections.

All in all it's one of the most engaging and unusual gaming experiences I've had in a while.
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2 of 3 people (67%) found this review helpful
5.9 hrs on record
Posted: February 19
I like the concept of the game quite a bit. A game with discussion of the central mystery with other players as a key game play feature is great. Chatting back and forth with other players interpreting the clues can be really fun. There are puzzles to be solved, although you'll be doing them all yourself without any input from the game. This can be a bit offputting.

I'd love to see the main ideas that make up the game further iterated on in a future title. I think it could use some more interactivity beyond chatting with players. Maybe allow a few puzzles that need to be solved in-game to advance every now and then? Or add some more indepth research beyond reading what's given to you.

Still, Cloud Chamber is unique. It's worth checking out and supporting a promissing new type of adventure game.
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3 of 5 people (60%) found this review helpful
5.4 hrs on record
Posted: December 22, 2014
Few games do such interesting things with narrative, and Cloud Chamber does something very interesting with it: Makes things social. Definitely recommended if you get a chance to pick it up, but make sure you can handle sci-fi and FMVs.
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