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Last night I got access to a digitized film reel from 1969 that shows off a computer artillery game called Potshot. And to explain why that’s a big deal, I need to talk about Dartmouth and the BASIC computer language.

In 1963-64, university faculty John Kemeny and Tom Kurtz developed the Dartmouth Time Sharing System, a time-share system notable for its speedy responses and accessibility for students and staff alike.

This was augmented further by their development of the BASIC computer language in 1964. That’s where a certain physics professor came in. Arthur Luehrmann saw the value of this system for education and entertainment early on, becoming an early evangelist for BASIC.

He developed two different versions of Potshot: a terrestrial one where players take turns shooting at each other over a mountain, and an orbital version that places the cannons in space.

The former was written up in People’s Computer Company in 1973, and that seems to have catalyzed the “artillery genre,” effectively making Potshot the progenitor! Games such as Artillery Duel, Scorched Earth, Gorillas.bas and Worms all trace their lineage back to Potshot.

While many DTSS programs still exist, as far as I know Potshot is lost. For decades we didn’t even know what it looked like beyond the PCC article. But Dartmouth’s library still features materials related to DTSS, including some film reels. I took a chance and reached out earlier this year.