🐳 Featured Group: Gameplay feature: Auto-mapping


aka: Bulls and Cows
Moby ID: 98887
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Moo is a simple terminal implementation of the guessing game known as ‘Bulls and Cows’, which is itself similar (but earlier) than the board game Mastermind. A random assortment of 4 digits is selected by the computer and must be guessed. A successful guess in the correct position is referred to as a ‘Bull’, while a successful guess in the wrong position is referred to as a ‘Cow’. Guessing all numbers in the correct position (four Bulls) wins the round.

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Credits (Mainframe version)

Original Multics version written by



Average score: 3.0 out of 5 (based on 1 ratings with 0 reviews)

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Identifiers +

  • MobyGames ID: 98887
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Contributors to this Entry

Game added by Ryan Armstrong.

Game added December 3, 2017. Last modified February 22, 2023.