SIGNAL CODE

Online Mastermind Code Breaking Game - Decode the Alien Transmission

Play this competitive mastermind-style logic puzzle game where you are a cryptographer intercepting an alien signal.

Use deduction and strategy to crack the hidden code sequence before the transmission corrupts.

Warning: The AI may lie. Trust nothing.

Compete globally with today's puzzle
Practice with random puzzles

HOW TO PLAY THIS MASTERMIND-STYLE PUZZLE:

  • Each position has a COLOR + SYMBOL combination
  • ✓ = Exact match (right combo, right position)
  • ◐ = Partial match (right combo, wrong position)
  • ✗ = Not in code (this combo doesn't exist)
  • ? = Signal corrupted (unreliable feedback)
  • High corruption = More AI lies and deception