
Two detectives, one deadly experiment, a race against time. Each player only has one half of the puzzle. In this 2-player co-op puzzle game you can survive the parallel experiment only by working together.
Modeled estimate, not a reported figure. How we estimate →
Prices
The United States storefront in every case, so this compares stores and not countries.
Discounts
Every price cut of more than 20% we have observed, in each market that quoted one, with this game's chart position on either side of it. These are episodes, not a model: a sale is one event, and one event cannot tell you what the next one will do.
Reviews, worldwide (the counter carries no country): 0.71/day in the week to Sep 7 → 0.71/day in the week after.
Reviews, worldwide (the counter carries no country): 0.86/day in the week to Jul 25 → 2/day in the week after.
For scale, across Steam · Top Sellers · Brazil over the last 30 days: the 25 chart moves that followed a price cut of more than 20% went a median of 10 places towards #1, and the 2,413 moves with no price cut behind them went 2 away. One store, one chart, one country — it is the only place we have enough observations to say even that.
Prices outside the United States have been collected since 6 August 2026 and chart positions since 19 July 2026, so a cut older than that has no market to compare and a market that joined later has no history yet. Nothing here is converted between currencies.
About
IMPORTANT: "Parallel Experiment" is a 2-player cooperative puzzle game with escape room-like elements. Each player must have their own copy on either mobile, tablet, PC or Mac (cross-platform play is supported).
In the game players take on the roles of two detectives who are often separated, each with different clues, and must work together to solve puzzles. Internet connection and voice communication are essential. Need a Player Two? Join our community on Discord! Find the link on the side of our Steam page.
Parallel Experiment is a noir-inspired adventure with a comic book art style, featuring detectives Ally and Old Dog. While following the trail of the dangerous Cryptic Killer, they suddenly become his targets and are now unwilling participants in his twisted experiment.
This is the second standalone chapter in the “Cryptic Killer” cooperative point-and-click puzzle game series. You can play Unboxing the Cryptic Killer first, if you want to learn more about our detectives and their nemesis, but Parallel Experiment can be enjoyed without prior knowledge.
In Parallel Experiment, players must rely on their communication skills as they’re separated and must each discover unique clues that are vital for solving puzzles on the other end. Teamwork is essential to crack the Cryptic Killer’s codes.
There are over 80 puzzles striking the perfect balance between challenging yet fair. But you're not facing them on your own! Communicate with your partner on how to best proceed, solve a puzzle on your end that unlocks the next step for them and discover a wide variety of puzzles from redirecting water flows, finding computer passwords and unlocking intricate locks, to deciphering cryptic ciphers, soldering electronic components, and even waking up a drunk!
Looking for a break from the main investigation? Dive into a variety of retro-inspired mini-games designed with a fresh cooperative twist. Challenge each other to darts, Three in a Row, Match Three, Claw Machine, Push and Pull, and more. Think you know these classics? We’ve reinvented them for a whole new co-op experience
Uncover vital clues through collaborative conversations. NPCs respond dynamically to each player, offering new layers of interaction that only teamwork can unravel. Some conversations are puzzles in themselves that you need to solve together!
Our love for comic books shines in Parallel Experiment. Every cutscene is presented as a beautifully crafted comic book page, immersing you in a gripping, noir-inspired narrative.
How many pages did we create to tell the story? Almost 100 pages! Even we were surprised by how much it took, but every panel was worth it to deliver a story that keeps you on edge until the very last frame.
Every detective needs a notebook. In Parallel Experiment, players can jot down notes, sketch solutions, and interact with the environment in creative ways. But we all know what you're going to draw first…
This is a key feature? Yes. Yes, it is.
Each level will have some way for players to annoy their co-op partner: knock on a window to distract them, poke them, make their screens shake. You already know you'll be doing this just by reading it, right?
Parallel Experiment has a variety of mind-twisting challenges that push the boundaries of cooperative puzzle design, offering situations never seen before in other games.
Sums Steam + Google Play
| Store | Price | Audience | Score | Chart | Est. revenue |
|---|---|---|---|---|---|
SteamYou are here | $5.99−40% | 835reviews | 85% | — | $130.2K |
| $6.99 | 62ratings | 74% | — | $122.3K |
Matched by title — a reused name can pair the wrong games. * is a critic aggregate. Prices and positions are each store's United States storefront; Epic charts worldwide. Audience and Score too, except Steam's, which is worldwide.
Engagement
Reviews
Themes across 112 recent reviews and how positive each mention is. A keyword signal, not full sentiment analysis.
Reviews
This is a great game! IF YOUR FRIEND WOULD ACTUALLY PLAY IT WITH YOU AND NOT SAY HE WILL AND THEN PLAY SIEGE ALL DAY! THAT'S RIGHT I'M TALKING TO YOU, MAX!
If the achievement grind wasnt so abysmal i would give this a thumbs up, so if u dont care about 100% go for it. Also it would randomly glitch during minigames and not let you press the X, had to close the game like 3 times 8/10
Media

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Price dynamics, follower growth, revenue and sales trajectories with interactive tooltips
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Genres
Stats
All-time low is the lowest price we've recorded for this game since we started tracking it.
Languages: English*, French, Italian, German, Polish, Russian, Simplified Chinese, Spanish - Latin America, Turkish*languages with full audio support
Hours played at review time, across 112 reviews with recorded playtime.
positive critical· bar length = how often the theme comes up
Oyun dümdüz 2D puzzle işte, yazılacak herhangi bir şey pek yok yani. Bulmacaların bazıları gereksiz zorluyor ama genel olarak güzel bir oyun sardı alınabilir
Oyunu aldık ama ıq seviyemiz çok yüksek olduğu için bir bulmacayı 2 saatte bitirdik :D
Très bon jeu qui suis Unsolved Case et Unboxing The Cryptic Killer mais celui ci est beaucoup plus complet avec une histoire vraiment intéressante et de bonnes énigmes ni trop compliqués ni trop faciles, à faire absolument si vous avez apprécié les deux autres
not better than the other two it had lots of bugs. but in overall it was a good game! 8/10
Parallel Experiment is a very unique co-op puzzle game wrapped around a detective story. There are proper cutscenes, a map system with fast travel and a couple of mini games to do on top of the puzzles you encounter in 4 chapters. The puzzles are very varied. What makes them unique is each partner being in a different room and not being able see what they're doing. Often you have to combine clues together to find the answers. This can create some very interesting situations with well thought out puzzles. I also enjoyed the story even if it's not original. The voice acting ranges from funny to pretty good, it definitely adds charm to the game. There is a proper hint system that can be used without affecting the achievements. The cartoony style is pretty appealing. The co-op nature the game has can also be a detriment sometimes. It can be frustrating to not see what your co-op partner is seeing. We ended up sending each other screenshots of our screens to make sense of our explanations. Some of the puzzles also got a bit too complex, especially the ones in the last chapter. When I looked at the hint, I didn't understand how they came up with the colours for the pillars. It ended up confusing me. Regardless, the game has been great for the most part. I can definitely recommend it if you're looking for a good puzzle co-op game. It took us over 10 hours to complete the game and get all the achievement with the help of a guide. The achievements range from story, to mini-games and some specific actions.
I really liked the first two games, and was looking forward to this one. However, this volume was plagued by a wave of useless cutscenes and by an overly complicated plot that made little to no sense. The first game was fun and lovely because it focused on puzzles that were fun to solve as a team. Here, you're introduced to a new gameplay every five minutes that doesn't really feel fun or well done. This, added with the unnecessary buffer, made playing this feel like a drag. I hope that the next title will focus less on plot and more on puzzles- the heart of this kind of game.
The puzzles are rather intuitive, provided you're able to communicate with your partner. Be descriptive and tell them what you see. You both need each other to get through. I would only recommend getting the game if you and your partner can make it through the demo. If you can get a good flow going between you, you'll have a good time!
电波神秘的谜题 延迟神秘的联机
Active players
Estimated daily and monthly active players (DAU/MAU) modeled from peak concurrency.
Players by region
Where this game's players are, estimated from review languages.
Players also reviewed
The games this title's players most often review too — audience affinity.
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