Guessing a hidden 3 or 4 digit number within 12 tries drives the core puzzle loop. The computer provides vague clues to indicate how close your guesses are to the correct sequence. Players can also engage in NIM, a strategic mode where you and an opponent take turns removing blocks to avoid being the one to take the last one.
Description: REG-Vault,
CC BY-SA 4.0Facts from REG-Vault, which aggregates several community databases; they may contain errors; gaps filled from TheGamesDB. Only retro platforms tracked by this site are listed.
Sources
REG-Vault(atari2600/codebreaker)
· last updated 2026-10-30 · descriptions CC BY-SA 4.0
TheGamesDB(31851,62390)
· last updated 2026-07-18 · no licence stated · internal use only
"Auto-matched" videos were found automatically (title + platform match via the YouTube Data API) and may occasionally be wrong. Videos are hosted by YouTube (embedded via youtube-nocookie.com; nothing loads from YouTube until you press play) and belong to their channels.
