Demon Attack is a fixed shooter video game created by Rob Fulop for the Atari 2600 and published by Imagic in 1982.

Fulop designed the game after leaving Atari, saying he was not properly reimbursed for his work on a port of Space Invaders.

It was the first game he developed that had a graphic artist, Michael Becker, who created eight-phase animations for the demons.

Programmer Gary Kato created a port of Demon Attack for the Intellivision console which added a final boss mothership.

A settlement was reached in January 1983, with Imagic being allowed to release Demon Attack for several video game consoles and home computers in the 1980s.

Demon Attack is set on a surface of a planet,[a] when strange winged creatures float above, threatening the player.

[4] In the Intellivision version, the boss fight with the demon flagship named Pandemonium appears after three waves of enemies are defeated.

[5][9] It is destroyed by eroding its shield with lasers shots and aiming for a small rotating wheel of vulnerability.

[10] He said that he expected a strong Christmas bonus from Atari based on how well Space Invaders had done commercially, but he only received a voucher for a free turkey dinner.

[15] Fulop later said that "I had to fight to keep the game in the lab for the last month, my mistake in finishing everything before polishing the motion - marketing was eager to ship it - I insisted on holding it back.

Kato said "when my eyes saw this, my mouth was hanging open, as soon as people started coming into work, I rushed back down and said...I have to have this in the game!

[21] Demon Attack was released in March 1982 for the Atari 2600 along with two other Imagic games: Star Voyager and Trick Shot.

[23] By the end of 1982, the Atari 2600 version of Demon Attack was the third highest selling console game of the year, only being beaten by Pitfall!

[28][25] Demon Attack was included in the Activision Anthology compilation, but was removed for the Game Boy Advance release.

[21] Atari had the exclusive rights to produce Phoenix for home consoles and filed suit against the company Imagic, believing that the Intellivision version of Demon Attack was too derivative of the arcade game.

[30] When asked about the legal issues between Atari and Imagic related to Demon Attack, Fulop responded that he "kept out of a lot of that.

[35] Reviews in other publications praised the graphics, with Jan Yarnot of The Space Gamer and Randi Hacker in Electronic Fun with Computers & Games describing the enemies as being "excellent" and "vibrantly colorful" respectively.

[32][36] Bill Kunkel and Arnie Katz wrote in Video went as far to say that Demon Attack had the best graphics among the most recent Atari 2600 games.

[41] Art Lewis of Electronic Fun with Computers & Games found the Odyssey 2 port not as smoothly colorful or as polished as the Atari 2600 original.

[47] GameSpy writer William Cassidy wrote that original Space Invaders-styled games on home consoles ranged from forgettable to pretty good, but Demon Attack was a standout due to its fast-paced action, responsive control, and audio-visual appeal.