Mark Allen

Mark Allen is a 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.Later, Allen developed a number of well-received computer games for the Apple II, including Stellar Invaders, Sabotage and Pest Patrol. Sabotage, In particular, became a classic Apple II game and sparked numerous clones. One such clone, Parachute, was preloaded software on early iPods that had displays.