Engage in a strategic number guessing game where players try to decipher a secret 3-digit code before their opponent. Utilize logic and deduction with strike and ball indicators to win matches and climb the leaderboards.
5.0(3 ratings)
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Best games like Protocol 4: Code Breaker PvP
10+ similar games compared and reviewed
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Updated September 2026
Whether you want more options like Protocol 4 or a completely different take on the same concept, our curated list of 10+ similar apps and games has you covered. Updated for 2026 with the latest ratings and comparisons.
Top Alternatives to Protocol 4
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CodeAB – Logic Number Puzzle by EssentialCapture Inc
Crack the code, sharpen mindWorth Considering
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5.0(3 ratings)
FreeIn-App Purchases
Test your logic and deduction skills in this addictive number puzzle game. Figure out the secret 4-digit code using hints after each guess. It's a fresh take on a classic puzzle, perfect for quick brain training.
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Guess secret numbers with unique digitsUtilize colored clues for deductionCompete on Game Center Leaderboards
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A mind-bending puzzle game where you must deduce a hidden 4-digit number within seven attempts. Analyze clues to determine correct digits and their positions, progressively increasing the challenge. Sharpen your logic and critical thinking to become a master problem solver.
4-digit number guessingClue analysis for deductionLogic and critical thinking challenges
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A logic puzzle game where you guess a secret number with unique digits. Receive feedback on correct digits and their positions to deduce the solution. Features multiple difficulty levels and global leaderboards.
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