Mark Allen (software developer)

Mark Allen is an American software engineer, game programmer and game designer. As a student at the University of California, San Diego, Allen used UCSD Pascal to develop a 6502 interpreter for the Pascal language in 1978, along with Richard Gleaves. This work later became the basis for Apple Pascal in 1979.^[1][2][3]

Later, Allen developed a number of well-received video games for the Apple II, including Stellar Invaders,^[4] Sabotage,^[5][6] and Pest Patrol.^[7][8] Sabotage, in particular, became a classic Apple II game and sparked numerous clones such as Paratrooper. One such clone, Parachute, was preloaded software on early iPods that had displays.