Aliens is a text-only clone of Space Invaders written for the CP/M operating system and made to be operated on the early Kaypro line of luggable computers.

It was written by Yahoo Software of Los Angeles, California.

[1][2] Along with Star Trek, CatChum, and Ladder, Aliens was one of the games that came with the early Kaypro computers.

The game runs in text mode; the aliens are made of letters and punctuation marks.

Each level was given a name, displayed on top of the screen, such as "Blood Bath" and "We Come in Peace."