Zarf’s Interactive Fiction

Furthermore, most situations in every game are amenable to a handful of common commands. The challenge was to take a list of player commands and write a transcript of a game (or even a complete game) that made use of those commands. It was an IF-style re-interpretation of Andy Looney’s arcade game Icebreaker, which I was porting to the Mac at that time.

Source: www.eblong.com