COLOSSAL CAVE ADVENTURE — PDP-10 · FORTRAN IV · 1977
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TYPE 1-2 WORD COMMANDS · "HELP" FOR HINTS

COLOSSAL CAVE ADVENTURE · 1977

THE GAME

This is the first text adventure — the program that founded interactive fiction. Will Crowther wrote it at Bolt Beranek and Newman in Cambridge, Massachusetts around 1975–76, in FORTRAN IV on a DEC PDP-10. You type one- or two-word commands; the machine answers in prose. Every adventure game since is downstream of this program.

THE CAVE IS REAL

Crowther and his wife Patricia were expedition cavers with the Cave Research Foundation, surveying the Mammoth Cave system in Kentucky — Pat was on the 1972 team whose connection of Flint Ridge to Mammoth made it the longest known cave on Earth. The game follows the real Bedquilt section: researcher Dennis Jerz has shown its map tracks the actual passages closely. The Hall of Mists, the Hall of the Mountain King, Bedquilt, and Y2 (a survey station name) are all real places. The survey plot beside the terminal is drawn in their honor.

THE HISTORY

Crowther wrote the game after his divorce, in part to share caving with his young daughters. In 1976–77 Don Woods, a graduate student at Stanford, found a copy on the lab computer, tracked Crowther down by emailing every host on the ARPANET, and with his blessing expanded it into the famous 350-point version. Crowther's original was thought lost for decades — until 2005, when it was recovered from a backup of Woods' student account. The data file this site runs is dated March 31, 1977: a smaller cave, no scoring, no pirate. Just the grate, the bird, the snake, the dwarves, and XYZZY, as it first was.

CREDITS

WILL CROWTHER — original design and program
PATRICIA CROWTHER — the caving and survey work behind the map
DON WOODS — the 1977 expansion, and the tape that saved this version
DENNIS JERZ — the research that recovered and documented the original (DHQ, 2007)
Source preserved at wh0am1-dev/adventure · this port lives at timmcelreath/colossal-cave