1969 · Simulation · PDP-8
Lunar Lander (1969) is Jim Storer's text game about landing on the Moon, written at Lexington High School, which grew into a whole genre.
Each turn stands for ten seconds of descent. The player reads the lander's speed and remaining fuel and types how much thrust to burn, trying to touch down gently before the fuel runs out. There are no graphics: the game reports its numbers as text.
Storer wrote it in the autumn of 1969 in FOCAL for a DEC PDP-8. It spread under many names, and the genre it started came to be called "lunar lander".