Journey to Alpha Centauri
Genre: Interactive Fiction
Journey to Alpha Centauri (In Real Time) is an interactive fiction game by Julian Fleetwood released in 1998. It has the longest video game minimum completion time – slightly more than three thousand years. It has never been (and in all likelihood will never be) completed without cheating. It was inspired by a description of a similar game in Terry Pratchett's novel Only You Can Save Mankind.