Alien Force
Atari 2600 · 1998
About this game
This is a Space Invaders variant with a twist.
Eight robots with laser cannons and protected by a shield wall are advancing towards earth and the player has a mobile laser cannon that has to be used to destroy them.
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The shield wall is indestructible, but the robots and the cannons aren't.
They'll go from side to side of the screen in an alternate movement shooting down.
Three high density molecular laser shields are placed in defense of the laser cannon.
Each one of them houses an extra cannon.
Instead of a passing flying saucer as seen in Space Invaders , the Merciless Monstroth moves left and right at the top, shooting down at the player.
The player controls a robot defender inside the laser cannon.
If the laser cannon is destroyed, the robot will be left unprotected.
The robot can enter a new laser cannon housed in one of the shields.
Once the new laser cannon is active, the shield is gone.
Once the three shields are gone, the Merciless Monstroth will come down to hunt the player's cannon and robot.
The player wins a battle when destroying all enemy robots and cannons on the screen.
A battle is lost when the player's robot is destroyed.
The first side to win ten battles wins the war.
About Atari 2600
The Atari 2600 (1977) was the console that first proved interchangeable game cartridges could sustain a mass-market business, effectively founding the home console industry as we know it. Most common 2600 titles are inexpensive today given how many units and copies were sold, but a small number of extremely rare releases — including several from Atari's own late-era prototype and licensed titles — are among the most valuable cartridges in retro collecting.
Gamevaro tracks Alien Force for Atari 2600 with separate market values for loose, complete-in-box (CIB) and factory-sealed copies, sourced from real eBay sales. Prices also vary by region — PAL, NTSC-U and NTSC-J releases of the same game often sell for different amounts due to print run sizes and regional collector demand.
Adding Alien Force to a Gamevaro collection takes seconds — search by title or scan the box barcode, and the app fills in cover art, release details and current pricing automatically. This A2600 release dates back to 1998.
Market values by condition
NTSC-U
Recent sales
| Date | Type | Region | Price |
|---|---|---|---|
| 2026-07-15 | Loose / Item only | NTSC-U | €17.74 |
Rarity & condition
Only a handful of market sales have been tracked for Alien Force, suggesting it doesn't trade hands very often — a sign of relative scarcity compared to more common Atari 2600 titles.
Complete-in-box (CIB) copies typically command a premium over loose cartridges/discs because the original box and manual are more fragile and get discarded or damaged over time — fewer complete sets survive.
Frequently asked questions
How much is Alien Force worth?
Alien Force for Atari 2600 is currently worth €17.74 loose. Prices are based on real sales and update regularly on Gamevaro.
Is Alien Force rare?
Alien Force has only a handful of tracked market sales, suggesting relative scarcity compared to more common Atari 2600 titles.
What's the difference between loose, CIB and sealed for Alien Force?
Loose means cartridge or disc only, CIB (complete in box) includes the original box and manual, and sealed means factory-sealed and never opened. These are tracked as separate market values because the price gap between them can be significant, especially for older releases.
Ratings & Reviews
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