Cylon Invaders


Developers Atari (original)
tkarner (hack)
Publishers Atari, Sears (original)
Freeware (hack)
System Atari 2600
Release Dates 1980 (original)
2008 (hack)
Modes Single player
Two players alternating
Two players simultaneous
Media Cartridge (original)
ROM file (hack)

Space Invaders for the Atari 2600 was the first ever arcade to home game license, becoming a huge best seller, which it included 112 games with multiple playing variables. In the game, a group of invaders marched from one side of the screen to the other, dropping down a notch closer to the player’s laser cannon whenever they reached a screen edge, firing at the player’s cannon all the while. The player had three bunkers to take cover under, although they would become damaged with the player’s and invaders’ laser fire, then disappear altogether if the invaders came down too close, and if the invaders made it down to the very bottom of the screen, the player was "invaded" and the game would end (along with if the player lost all three of their laser cannons due to being shot by invaders would also end a game). A high-scoring Command Alien Ship would also fly overhead several times during a wave as well.

Cylon Invaders is a graphical hack of the game -- it plays the exact same as the Atari 2600 original -- as the Invaders were changed to resemble various ships from the two Battlestar Galactica tv series, the laser cannon was changed to a Viper, and the bunkers changed to resemble Battlestars.


"You are flying a Colonial Viper along with three Battlestars in low orbit. Then the Cylons unleash...the latest Raiders, backed up by one squadron of old school Raiders.[1]"

Game variationsEdit

  • Moving Battlestars--Barriers move back and forth
  • Zigzagging Laser Bombs--Invaders' shots zigzag back and forth towards the ground
  • Fast Laser Bombs--Invaders Bombs drop quickly
  • Invisible Invaders--Invaders are invisible unless one (or the Basestar) is shot, which they then briefly reappear
  • Large Viper--flipping a difficulty switch on the 2600 console to the A position makes players' Vipers larger

Game variations, player setupEdit

There are two player alternating variations, along with variations to not only have both players onscreen at once, but there are also several competing variations as well, such as ones where if one player gets hit by Invader fire, the other player is awarded 200 points. Others include alternating shots where if one player takes too long to fire from their Viper then it will automatically shoot.

Other variations include ones where one player controls one Viper, along with one player can only move it to the right, while the other player can only move it to the left. Other variations allow one movement and one shot per player, then the other player gets to do the same, and others have one player move the Viper while the other player fires.


  • Row one Invader--5 points
  • Row two Invader--10 points
  • Row three Invader--15 points
  • Row four Invader--20 points
  • Row five Invader--25 points
  • Row six Invader--30 points
  • Basestar--200 points, or 100 points in certain game variations
  • Other player's Viper hit--200 points awarded to other player on certain competitive game variations


  • Move Viper--joystick left and right
  • Fire--button


The original game came with several label variations, which are known as Picture, Text, Red, and Silver labels. This version comes as a ROM file only to be played on Atari emulators or flashcarts.


  1. Atari Age forums post from the author.
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