Parallel Experiment develops an interesting story about the journey of two detectives, Ally and Old Dog, to prevent evil experiments. Players will have companions throughout the story. Each case will contain many interesting puzzles for players to solve. They need to defeat the Cryptic Killer and destroy all evil research.
TWO-PLAYER CO-OP
The cooperation of two players makes this game more interesting. Players will work with another detective to solve difficult puzzles together. The attractive details will help players maintain excitement when participating in this game.
- Unique Clues Dependence: Players play as Ally and Old Dog to infiltrate the Cryptic Killer organization. All research projects here are aimed at an evil purpose. Players need to stop the villain’s plan by collecting clues and destroying the studies.
- Separated Immersive Teamwork: This game will be experienced in a team format. Players need to work with another player to collect evidence and successfully solve the problem in the game. The tasks will be divided equally between the two detectives.
- Puzzle Bond Excitement: All the actions of the player and his ally are monitored by the opponent. However, they will have a way to escape control and gain the advantage. To move on to the next puzzle, the player will have to solve all the problems in the old puzzle.
CHALLENGING COLLABORATIVE PUZZLES
The game contains dozens of interesting and engaging puzzles for players to solve. They will have to perform many special tasks to connect the puzzle pieces together. Each puzzle develops an interesting challenge involving stringing, decoding, and many other activities.
- Creative Interlinked Tasks: Two detectives work together to solve many pre-made puzzles. Each puzzle will be presented with realistic illustrations. Players will be put in many emergency situations when they have to solve puzzles and perform many tasks at the same time.
- Varied Puzzle Mechanics: The game provides more than 80 puzzles for players to solve together. Their task is to collect evidence and make judgments to help solve the problem well. Their deductions will be extremely useful in the process of solving cryptographic puzzles.
- Unlock Progress Together: Much new content will be unlocked, and players can explore together. Darts challenge, Three in a Row, Match Three, Claw Machine, or Push and Pull will attract players’ attention. A more special progress with many attractive mini-games will be opened.
- Upgraded Unity version to address the CVE-2025-59489 security vulnerability
Bug fixes:
- Improved level exit conditions in the City Maze puzzle
- Fixed an issue that sometimes caused brain pieces to be positioned incorrectly
- Fixed a bug allowing players to exit the elevator while it was moving
- Fixed a potential soft lock in the puzzle where players need to throw a belt
All Version

Mod info: