Caverns of Mars [SEP] publisher
Caverns of Mars
Caverns of Mars is a vertically scrolling shooter for the Atari 8-bit computers, programmed by Greg Christensen and published by the Atari Program Exchange (APX) in 1981. It became the best selling APX title of all-time and was moved into Atari, Inc.'s official product line, first on diskette and later on cartridge.
The game is essentially a verticallu-scrolling version of the arcade game "Scramble", with the twist that the player must re-trace their steps through the map to
" (Konami, arcade), "Red Clash" (Tekhan, arcade), and Atari 8-bit computer game "Caverns of Mars". "Caverns of Mars" follows the visual style and some of the gameplay of the horizontally-scrolling "Scramble" arcade game released earlier in the year. The Atari 8-bit computers have hardware support for vertical, as well as horizontal, smooth scrolling. "Caverns of Mars" was cloned for the Apple II as "Cavern Creatures" (1983). 
In 1982,