In 1962, a group of MIT programmers turned a 120,000-dollar PDP-1 the size of three refrigerators into a two-player space dogfight, and in the process laid the groundwork for the modern video game industry. This episode follows Steve Russell, Martin Graetz, and Wayne Wiitanen of the self-styled Hingham Institute as they drew on the Lensman novels and Japanese tokusatsu films to stress-test the first real-time computer display, and how Alan Kotok ended Russell’s procrastination by driving to DEC to fetch a trigonometry routine on paper tape.

We explore how roughly 200 hours of raw assembly code produced inertia, limited fuel and torpedoes, a firing cooldown, and a wraparound screen, and how the open hacker ethic let Peter Samson add an astronomically accurate star field, Dan Edwards add a central star with gravity, Martin Graetz add a risky hyperspace button, and Bob Saunders build the first detached game controller to save both the machine and players’ elbows. We also cover how the game spread hand to hand on punched tape, became DEC’s factory smoke test, inspired the 1972 Rolling Stone tournament at Stanford, and fed directly into Galaxy Game, Computer Space, Atari, and Asteroids.

• What computing looked like before the PDP-1 made real-time interaction possible
• How peer pressure, not a lone eureka moment, got Spacewar written
• Why the game’s physics and tactical mechanics were invented from scratch in assembly language
• How community modifications like Expensive Planetarium and gravity defined the hacker ethic
• Spacewar’s path from lab curiosity to the Library of Congress game canon and the World Video Game Hall of Fame