Space Strike is a 1982 computer game for the IBM PC

IBM PC

The IBM Personal Computer, commonly known as the IBM PC, is the original version and progenitor of the IBM PC compatible hardware platform. It is IBM model number 5150, and was introduced on August 12, 1981...

 family of computers, created by Michael Abrash and published by Datamost

Datamost

Datamost was a software design company founded by David Gordon and based in Chatsworth, California. Datamost operated in the early 1980s producing games and other software mainly for the Apple II, Commodore 64 and Atari platforms, with some for the IBM PC...

. Space Strike is essentially a clone of the popular Space Invaders

Space Invaders

is an arcade video game designed by Tomohiro Nishikado, and released in 1978. It was originally manufactured and sold by Taito in Japan, and was later licensed for production in the United States by the Midway division of Bally. Space Invaders is one of the earliest shooting games and the aim is to...

video game of the late 1970s.
In both games, the player controls a small mobile firing platform that he moves side to side along the bottom of the screen. Waves of aliens attack from above, sweeping back and forth and slowly descending. Barriers provide cover for the player, but are degraded by weapons fire both from above and from below. The level is complete when all the aliens are destroyed, but ends if the player gets shot or if the aliens descend to the point that they collide with the player.