Parallel Experiment Launches on Steam & Mobile - Outsmart the Cryptic Killer Together!
Two can play that game, but only together! The ultimate co-op puzzler you've been waiting for, is out now!
5 JUNE 2025 - Eleven Puzzles is proud to announce the launch of Parallel Experiment, a brand-new cooperative escape room-style puzzler available now on Steam, iOS, and Android! In this brain-bending, communication-driven game, two detectives are trapped in a twisted experiment by the infamous Cryptic Killer, and the only way out is together.
Two detectives, one deadly experiment, a race against time.
Each player only has one half of the puzzle.
Parallel Experiment costs $9.99 on PC, $6.99 on iOS & Android. (regional pricing may vary). The co-op puzzler has a two-week 20% launch discount and players can get an even better deal with the Cryptic Killer Bundle, including Unsolved Case, Unboxing the Cryptic Killer, and Parallel Experiment, which offers an additional discount.
Just like in their previous titles, crossplay is possible across all platforms!
(+ a Nintendo Switch version will arrive later in the year!)
Parallel Experiment's Official Launch Trailer:
Press & creators looking to solve co-op mysteries together can request 2 game codes now. There is even a puzzle surprise at the end of the form: If you can crack the optional puzzle box, you'll get access to exclusive in-game content!
Request 2 keys for Parallel Experiment (Steam and/or mobile)
Steam Page: store.steampowered.com/app/2012320/Parallel_Experiment
Website: elevenpuzzles.com/parallel-experiment
Press Kit: piratepr.notion.site/parallel-experiment
Contact: adrian@elevenpuzzles.com (Interviews Welcome!!)
About the Game
Parallel Experiment is a 2-player cooperative puzzle game with escape room-like elements. Players take on the roles of two detectives who are often separated, each with different clues, and must work together to solve puzzles.
It's 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.
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.
Key Features
🔍 Two Player Co-Op
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.
🧩 Challenging Collaborative Puzzles
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!
🕹️ Two Can Play That Game
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
🗨️ Cooperative Dialogues
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!
🎨 Noir-Inspired Comic Book Art
Explore hand-drawn environments that look like they’ve leapt straight off the pages of a comic book.
🐒 Annoy Each Other
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?
✍️ Draw on… Everything!
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...
For more updates on the game, follow the devs on:
Twitter | Facebook | Instagram | TikTok
or Join the Discord, where you can also find players to join your co-op adventure!
About Eleven Puzzles
Founded in Poland in November 2020, Eleven Puzzles began as a passion project during the pandemic, creating online escape rooms that brought people together. In 2022, we launched Unsolved Case, a free standalone game for Steam, iOS, and Android, which quickly became a hit with over 5,000 reviews and an 88% positive rating. The success of Unsolved Case inspired us to develop Unboxing the Cryptic Killer, released in 2023 to critical acclaim.
At Eleven Puzzles, we specialize in crafting innovative, cooperative puzzle experiences that challenge communication and collaboration. With our latest title, Parallel Experiment, we’re exploring new dimensions of teamwork and shared problem-solving, redefining what multiplayer puzzle games can be.
We’re proud to be a fully independent, self-funded studio. The success of our games has allowed us to grow sustainably, expanding the scope and ambition of each new project while staying true to our creative vision.
Copyright © 2025 Eleven Puzzles, All rights reserved.