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 (127 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
29 of 35 people (83%) 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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14 of 21 people (67%) found this review helpful
11.0 hrs on record
Posted: February 20
June 4, 2015

Cloud Chamber is a social platform based around complex scientific subjects. Notice, this is NOT a game in terms of gameplay or interactivity. It is a place to view content and discuss it. Problems arise as the interface impedes everything, and there is low incentive to put effort into research. There are no mental challenges to solve or interactive gameplay elements, and there is no real conclusion. I can appreciate the effort, but it's $20 USD for some videos smothered with distortion effects.

I followed Cloud Chamber prior to release, interested but never enough to buy early. The devs never gave a clear picture on the content. I ended up getting a copy from the 2014 Gem Auction. I'm not too disappointed in getting the game for a minimal cost, but in retrospect I would've preferred having the gems.

Cloud Chamber starts out stumbling hard. Quicktime AND a registered account are required to play. Everything is dependent on the servers, and the forums load slower than the videos. This also depends on the devs keeping enough money to keep the servers alive, and will undoubtably slow down the rate of updates due to costs. There's supposed to be an update this month, which is after months of nothing.

The default account settings spam your email for every like and comment connecting to you. Fortunately the community is not heavily populated, but you will change the email settings very quickly in annoyance. The UI is slow and poorly designed, making it more difficult to see comments on your posts and see what you have missed. Navigating between content nodes can look cool in the videos, but quickly gets old when you want to compare information between nodes. I would've preferred access to simple folders and organization options.

I was hoping for a cool ARG with puzzles and community tasks, but everything here is posting theories (The Signal caused everything ever) or complicated research that may be red herrings. I sense the plot was left loose intentionally, random elements thrown in to bolster the mystery with no intent on a conclusion. Similar to the content navigation, the story is a bunch of tangled strings with no solution. I understand this production is expensive, but I haven't seen any opportunity for new content on the conclusion. It's interesting, but not worth admission price for the ending. I wish the developers good luck, as they have nice concepts and talent.
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14 of 22 people (64%) found this review helpful
8.7 hrs on record
Posted: February 9
There is no gameplay to speak of. This isn't a game, it's a Facebook simulator. But not even in an entertaining game-like way, such as how Redshirt does it.

Running this requires Quicktime, and if you pick the official install it will also come with other Apple crapware.

I cannot tell if disappearing comments are due to bugs (of which there are several show-stoppers) or hostile developer action.
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11 of 17 people (65%) 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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2 of 2 people (100%) found this review helpful
5.1 hrs on record
Posted: June 27
If you want a unique experience, this is it. Cloud chamber takes you on a journey of investigation where you can discuss your theories with other players. Thanks to the posting algorithm, these discussions decay over time so there is always a chance for new players to shine. You're actively encouraged to like and dislike what others write, and add a comment of your own. Through doing this you unlock the hidden content. So far by just spending a day on a node being social, I've found that the next day the content was unlocked for me. Even though this game is centered around science, no advanced knowledge is needed, though with some interest in the subject you might end up enjoying it more. It's a game to take your time with, do a little a day and just enjoy the journey.
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