Attack at EP-CYG-4 is a shoot 'em up video game created by Mike Edwards for Atari 8-bit computers and published by his company BRAM, Inc. in 1982.

[1] It allows two players to cooperatively control the action against a computer enemy, in a fashion similar to Synapse Software's Survivor, also released in 1982.

EP-CYG-4 was the first of Edwards' game efforts, and its success led to the creation of Zombies, which was published by Electronic Arts as Realm of Impossibility.

"[5] The Addison-Wesley Book of Atari Software 1983 gave Attack at EP-CYG-4 an overall rating of "D," calling it "a game of mindless, systematic destruction requiring little thought or skill.

He found the single-player mode overwhelming, but enjoyed the two-player game: "Teamwork is definitely called for, and the coordination of effort is half the fun.