Code Breaker is a minigame appearing in several games. In Megami Tensei II and Shin Megami Tensei II, it is a minigame where the player must select 3-5 correct numbers, with the numbers ranging from 1-5 (3), 1-7 (4), or 1-9 (5); in Persona, it is played similar to Sudoku, with the goal being to assign each number from 1-9 exactly once in a 3x3 grid. In all instances, playing Code Breaker requires Metal Cards, which are found as treasure and dropped by some enemies.
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