Is Mountain King on Steam?

No. Mountain King 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.

When did Mountain King release?

Mountain King was first released on December 31, 1983.

Mountain King

Dec 31, 1983PlatformArcadeCommodore VIC-20ColecoVision Atari 2600Atari 8-bitCommodore C64/128/MAX

Mountain King — frequently asked questions

Is Mountain King on Steam?: No. Mountain King 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 Mountain King on?: Mountain King is available on Commodore VIC-20, ColecoVision, Atari 2600, Atari 8-bit, Commodore C64/128/MAX, Atari 5200, Coleco Adam, Commodore 64, VIC-20.
When did Mountain King release?: Mountain King was first released on December 31, 1983.

About Mountain King

Deep inside a long-lost diamond mine is the secret Temple Chamber of a forgotten civilization. There, a priceless Golden Crown sits high on a pedestal, vulnerable to plundering explorers seeking to control its power. but this treasure is jealously guarded by the denizens of the mountain, and whoever has the daring and courage to challenge them, seize the Crown, and escape to the mountaintop with it will become MOUNTAIN KING!

Summary via IGDB.

Mountain King on Wikipedia

Mountain King is a multidirectional scrolling platform game published by CBS Electronics in 1983. It was designed by E. F. Dreyer and Robert Matson, and programmed by Matson, for the Atari 8-bit computers. It was converted to the Atari 2600, Atari 5200, ColecoVision, Commodore 64, and VIC-20. Along with Tunnel Runner and Omega Race, the Atari 2600 cartridge includes 256 bytes of random access memory, a feature promoted as "RAM Plus".

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

Game details

Platforms: Commodore VIC-20, ColecoVision, Atari 2600, Atari 8-bit, Commodore C64/128/MAX, Atari 5200, Coleco Adam, Commodore 64, VIC-20
Developer: VSS, Inc.
Publisher: Beyond Software
Game modes: Single player
Themes: Action

Details via IGDB.

Every version compared

Prices, contemporary reception and the studio credited for each release

Platform	Year	Loose	Complete	Sealed	Period reviews	Built by
Atari 2600	1983	$15	$46	$58	Graphics ★★★½ · Play-Action ★★★★	VSS (designed by Ed Salvo)

Also released on: Commodore VIC-20 · ColecoVision · Atari 8-bit · Commodore C64/128/MAX · Atari 5200 · Coleco Adam · Commodore 64 · VIC-20. We haven’t priced or authenticated those versions yet.

Collector value & authenticity

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

Loose

$15

Complete

$46

Sealed

$58

Release record

Territory	Label	Catalog #	Rarity
North America CBS Electronics	Standard	80080	Scarce+

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

Region: NA
Released: 1983
Controller: Atari Joystick
Players: 1
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

A clever CBS Electronics platformer that needed extra RAM on the cartridge, and still cheap.

E. F. Dreyer and Robert Matson designed Mountain King for the Atari 8-bit computers. CBS Electronics published it in 1983, and the Atari 2600 version, programmed by Ed Salvo at Video Software Specialists, followed in December 1983.

The 2600 cartridge carries 256 bytes of extra RAM, a feature CBS promoted as RAM Plus. Tunnel Runner and Omega Race have the same feature.

How it was made

Designed by E. F. Dreyer and Robert Matson. The 2600 version was programmed by Ed Salvo at Video Software Specialists and published by CBS Electronics in December 1983.

What the press said at the time

Computer Entertainer Vol. 2 No. 9

December 1983

Graphics ★★★½ · Play-Action ★★★★

“What a pleasant surprise when we played the version for the 2600—it's a winner! Graphics are very good, especially the effect of the flashlight beam in the darkness of the mine.”
— Computer Entertainer, December 1983

“With its increased memory chip, the VCS version of Mountain King is pretty darned close to its higher-RAM cousin — and with eight levels of challenge, it's just as much fun.”
— Electronic Games, May 1984

Computer Entertainer rated graphics first and play action second, from four symbols (excellent) to one (poor) — stars in most years, diamonds in 1986–87 — comparing each game only with other games for the same system.

Cartridge & preservation record

Program size 12 KB, measured from the preserved dump.

Catalogue number as recorded for the physical release.

How the Atari 2600 version differs

Like Tunnel Runner and Omega Race, the 2600 cartridge carries 256 bytes of extra RAM, promoted as "RAM Plus".

Electronic Games said the extra chip roughly doubles the 2600's memory, and it found the scrolling playfield, graphics and theme song of the Atari computer original all intact.

Also on other platforms

Atari 8-bit · Atari 5200 · ColecoVision · Coleco Adam · Commodore 64 · VIC-20

Atari 2600	VSS (designed by Ed Salvo)
Atari 8-bit	Robert Matson (programmer); published by CBS Electronics

Worth knowing

The RAM-cram chip. Electronic Games reported: "With the help of its own RAM-cram chip (which just about doubles the memory capabilities of the 2600), CBS Electronics has translated Mountain King from its original Atari computer format".

Before you buy

Low risk, with no documented reproductions. Loose copies are inexpensive. Boxed copies cost a few times more. Because the cart has extra RAM on board, test that it boots and plays rather than accepting an untested listing.