Is Sentinel on Steam?

No. Sentinel 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 Sentinel on?

Sentinel is available on Atari 7800, Atari 2600.

When did Sentinel release?

Sentinel was first released on December 31, 1990.

Sentinel

Dec 31, 1990ShooterAtari 7800 Atari 2600

Sentinel — frequently asked questions

Is Sentinel on Steam?: No. Sentinel 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 Sentinel on?: Sentinel is available on Atari 7800, Atari 2600.
When did Sentinel release?: Sentinel was first released on December 31, 1990.

About Sentinel

Sentinel is a 1990 video game developed by Imagineering and published by Atari for the Atari 2600. It is the only light gun game ever released for the Atari 2600 platform. It was re-released with improved graphics for the Atari 7800 in 1991.

Summary via IGDB.

Game details

Platforms: Atari 7800, Atari 2600
Developer: Imagineering Inc.
Publisher: Atari Corporation
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	Built by
Atari 2600	1991	$35	$73	$88	Imagineering (designed by David Lubar)

Also released on: Atari 7800. We haven’t priced or authenticated that version yet.

Collector value & authenticity

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

Loose

$35

Complete

$73

Sealed

$88

Release record

Territory	Label	Catalog #	Rarity
North America Atari	Red	CX26183	Rare

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

Region: NA
Released: 1991
Controller: XE Light Gun
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

Among Atari's last new 2600 games, and described as the console's only light-gun release.

David Lubar programmed Sentinel at Imagineering, and Atari Corp published it as one of its final new 2600 games, shipping in spring 1991 alongside Ikari Warriors, MotoRodeo and Xenophobe. It is described as the only light-gun game released for the 2600.

Atari re-released it for the 7800 in 1991 with improved graphics.

How it was made

Programmed by David Lubar at Imagineering and published by Atari Corp. Some references date it to 1990, when Atari announced it; period trade sources place its release in March 1991.

Cartridge & preservation record

Program size 16 KB, measured from the preserved dump.

Catalogue number as recorded for the physical release.

How the Atari 2600 version differs

Sentinel was re-released for the Atari 7800 in 1991 with improved graphics over the 2600 original.

Also on other platforms

Atari 7800

Atari 2600

Imagineering (designed by David Lubar)

Atari 7800. The Atari 7800 version was released in Europe only, making it the final official European release for the 7800. The Video Games Critic still called it a complete dud.

Before you buy

Low risk. No fakes are documented. Because it is a light-gun game, ask whether a gun is included if you intend to play it. Atari Corp releases from 1986 onward use a universal 2600/7800 shell with no dust door and a plain gray label rather than a multi-layer silver one. That is how genuine copies look, so don't mistake it for a fake.