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Parallel: 2-Player Brain Teasers Hit Mobile

Author:Kristen Update:Nov 25,2025
  • Parallel Experiment is now available on iOS and Android
  • Team up with a friend to stop the elusive Cryptic Killer
  • Help each other survive, or sabotage your partner for fun

The mind-bending cooperative puzzle game, Parallel Experiment, is now available for purchase on iOS and Android. As the second installment in developer Eleven Puzzles' Cryptic Killer series, this game delivers even more surprising challenges and twists in your mission to prevent the notorious killer from striking again.

In Parallel Experiment, the two detectives from Unboxing the Cryptic Killer find themselves at the killer's mercy. The stakes are higher than ever, requiring seamless teamwork to solve deviously complex puzzles that challenge both your communication skills and your friendship.

Featuring a retro noir-inspired world and over 80 challenging puzzles, this is the perfect cooperative experience for fans of games like Keep Talking and Nobody Explodes. For just $6.99, you can dive in and test your wits against the Cryptic Killer's elaborate traps.

ytWhat's inside the box?!

And yes, irritating your partner is part of the fun! If the intense detective work feels too serious, you can lighten the mood by tapping on windows or playfully poking your cooperative partner.

Parallel Experiment offers more than just puzzles. Take a break from the main case to explore engaging minigames and interrogate NPCs who react uniquely to each player. Teamwork is essential—if you want to survive, you must collaborate effectively, even when tensions run high.

If you don't have a puzzle-loving friend available, check out our updated list of the top five new mobile games to try this week. Discover the best recent releases for iOS and Android!