Released in 1978 for the Atari 2600, Codebreaker is a video game that belongs to the puzzle game genre. Players are tasked with deciphering a secret code by inputting a series of numbers and using logic to interpret feedback from each guess. With each attempt, clues are provided to inform the player which aspects of their guess were correct. The game offers a variety of code lengths and difficulty settings, testing the player's deductive reasoning and pattern recognition skills in an era where gameplay was largely simple yet engaging.