Get the cheapest digital key for Parallel Experiment on Driffle. It is the second standalone game in the Cryptic Killer series, a cooperative point-and-click puzzle adventure. Detectives Old Dog and Ally are back, determined to stop the infamous Cryptic Killer once and for all. After being tricked in Unboxing the Cryptic Killer, they follow a new trail of mysterious clues across the city. Each step brings them closer to uncovering his latest scheme: the Parallel Experiment. But with so many twists, they can’t be sure if they’re closing in on him or walking straight into another trap.

Key Features

• Two-Player Co-Op: Team up with a friend to solve puzzles. Each player sees different clues, so communication is the key to cracking the case.
  
  
• Challenging Puzzles: No single person can solve the Cryptic Killer’s tricks alone. Work together to put the pieces together and outsmart him.
  
  
• Unique Hand-Drawn World: Explore beautifully illustrated noir-style locations that set the stage for a thrilling detective story.
  
  
• Take Notes on Everything: Use an in-game notebook to jot down clues, sketch ideas, and scribble on the environment as you work through each mystery.

How to Activate

1. Launch the Steam client software and log into your Steam account.
2. Click on the Games menu option at the top of the Steam client.
3. Choose Activate a Product on Steam.
4. Follow the onscreen instructions to complete the process.

In Parallel Experiment, teamwork is the only way to stop the Cryptic Killer. Solve tricky puzzles, communicate with your partner, and follow the trail of clues before it’s too late. The case is waiting, are you ready to take it on?