Is Codebreaker on Steam?

No. Codebreaker is not distributed on Steam, so there is no Steam Charts or SteamDB player count for it. Its live popularity is tracked here via Twitch viewership instead.

What platforms is Codebreaker on?

Codebreaker is available on Atari 2600.

When did Codebreaker release?

Codebreaker was first released on November 1, 1978.

Codebreaker

Nov 1, 1978PuzzleAtari 2600

Codebreaker — frequently asked questions

Is Codebreaker on Steam?: No. Codebreaker is not distributed on Steam, so there is no Steam Charts or SteamDB player count for it. Its live popularity is tracked here via Twitch viewership instead.
What platforms is Codebreaker on?: Codebreaker is available on Atari 2600.
When did Codebreaker release?: Codebreaker was first released on November 1, 1978.

About Codebreaker

This one's not for stupid people. The goal of codebreaker is to guess a 3 or 4 digit number in 12 tries. The computer lets you know when your on the right track with some vague clues. In the second game, NIM, you and your opponent strategically remove blocks in an attempt to be the one to remove the last block.

Summary via IGDB.

Codebreaker on Wikipedia

Codebreaker is a puzzle video game released in 1978 by Atari, Inc. for the Atari VCS. It was in the first wave of Atari VCS games to follow the original nine launch titles. It was one of three cartridges to accompany the introduction of the Atari keyboard controller, an add-on launched in response to claims of false advertising that the VCS is a "computer".

Source: Wikipedia (text under CC BY-SA 4.0).

Game details

Platforms: Atari 2600

Details via IGDB.

Collector value & authenticity

Atari 2600 · PriceCharting sold data · Verified 2026-10-06

Loose

Complete

$27

Sealed

$73

Label variants

Release	Loose	Complete	Sealed
Tele-Games	$6	$18	—
Text Label	$7	$29	—

Release record

Territory	Label	Catalog #	Rarity
North America Atari	Picture	CX2643	Scarce
North America Atari	Text	CX2643	Scarce
North America Sears	Text	99815	Scarce+

Source: Catalog numbers, label types, rarity, controllers and player counts: AtariAge 2600 software database

Region: NA
Released: 1978
Controller: Atari Keypad
Players: 1 - 2
Authenticity: Low

Not in Atari 50 — other compilations and plug-and-plays are not tracked hereLow counterfeit risk

Atari 2600 prices, all games & how to spot a fake

An early keyboard-controller puzzle game, a cheap curiosity that needs the right controllers to play.

Codebreaker is a puzzle game Atari released in October 1978, in the first wave of VCS games after the original nine launch titles. It was one of three cartridges launched with the Atari keyboard controller, alongside Hunt & Score and Brain Games.

The keyboard controller came out in response to claims that advertising the VCS as a computer was false. The game makes most sense today as part of that small family of keyboard titles.

How it was made

Developed and published by Atari in October 1978, and also sold by Sears.

Cartridge & preservation record

Program size 2 KB, measured from the preserved dump.

Catalogue number as recorded for the physical release.

Worth knowing

1981 dealer price. Atari's confidential retailer price list for January 1 to June 1, 1981 lists Codebreaker (CX2643) in its basic tier: dealers paid $14.00 against a suggested retail price of $22.95.

Before you buy

Low risk. Codebreaker needs the Atari keyboard controllers, so check whether a listing includes them if you want to play it. Three labels are priced: the standard Atari cart, a Sears Tele-Games cart and a cart PriceCharting lists as "Text Label". All are cheap loose. Check which one the photos show if you are collecting label variants.