Is Sector Alpha on Steam?

No. Sector Alpha 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 Sector Alpha on?

Sector Alpha is available on ColecoVision.

When did Sector Alpha release?

Sector Alpha was first released on February 1, 1983.

Sector Alpha

Feb 1, 1983ShooterArcadeColecoVision

Sector Alpha — frequently asked questions

Is Sector Alpha on Steam?: No. Sector Alpha 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 Sector Alpha on?: Sector Alpha is available on ColecoVision.
When did Sector Alpha release?: Sector Alpha was first released on February 1, 1983.

About Sector Alpha

Sector Alpha is a three-dimensional arcade-type search and destroy game. Robot penetrator space craft are invading from three directions and you must face and destroy them in each direction of the playing field.

Summary via IGDB.

Game details

Platforms: ColecoVision
Developer: Spectravideo International Ltd.
Publisher: Spectravideo International Ltd.
Game modes: Single player, Multiplayer
Themes: Action

Details via IGDB.

Collector value & authenticity

ColecoVision · PriceCharting sold data · Verified 2026-10-19

Loose

$39

Complete

$124

few sales

Sealed

—

How often it sells

Loose: about 6 times a year
Complete: about once a year
Sealed: rarely — fewer than one recorded sale a year

Prices marked “few sales” rest on about one recorded sale a year, so treat them as a rough guide: the next copy could sell well above or below. Expect to wait for one to come up.

Sales frequency from PriceCharting's completed-sale records, as of 2026-10-19.

Price over time

Loose
Complete

A loose copy sold for about $45 in Jul 2019, $67 five years ago, and $39 as of Oct 2026.

Show as table

Month	Loose	Complete
Jan 2020	$45	$48
Jan 2021	$61	$68
Jan 2022	$79	$102
Jan 2023	$98	$250
Jan 2024	$76	$250
Jan 2025	$50	$250
Jan 2026	$50	$225
Oct 2026	$39	$124

Monthly price estimates from PriceCharting's completed-sale records, sampled quarterly, through Oct 2026.

Release record

Territory
North America Spectravideo

Source: Model numbers, end-label variants and CBS numbers: the ColecoVision FAQ v4.1, each serial confirmed against Coleco's 1982 catalogue, the game's manual or its UPC; barcodes from PriceCharting, check digits verified

Region: NA
Released: 1984
Players: one or two
Authenticity: Low

Modern re-releases are not tracked for the ColecoVisionLow counterfeit risk

ColecoVision prices, all games & how to spot a fake

A Spectravideo space game from 1984 that there is almost no documentation about.

Spectravideo published Sector Alpha for the ColecoVision in 1984. The sources name no developer and turned up no period review of the cartridge, so nothing reliable can be said about its gameplay.

Spectravideo billed its cartridges as ColecoVision-compatible, which is how the period press described them.

Worth knowing

From the ColecoVision manual. You defend three sectors (ahead, left, right) shown on radar panels; a sector you are not attending fights on auto defense with fewer missiles.
From the ColecoVision manual. The game is over once you have lost all your ships in any one sector.

Before you buy

Standard keypad controller. Only loose copies show up in price tracking, so there is no boxed price to compare against; check the label and that the cartridge boots before paying.