The Edifice is a 1997 work of interactive fiction

Interactive fiction

Interactive fiction, often abbreviated IF, describes software simulating environments in which players use text commands to control characters and influence the environment. Works in this form can be understood as literary narratives and as video games. In common usage, the term refers to text...

 by Lucian P. Smith about the evolution of an early anthropoid

Anthropoid

Anthropoid may refer to:*Simian, monkeys and apes *Anthropoides, a genus of cranes*Operation Anthropoid, the codename for the assassination of SS-Obergruppenführer and Reichsprotektor of Bohemia and Moravia Reinhard Heydrich...

 in stone-age times. It is distributed in z-code

Z-machine

The Z-machine is a virtual machine that was developed by Joel Berez and Marc Blank in 1979 and used by Infocom for its text adventure games. Infocom compiled game code to files containing Z-machine instructions , and could therefore port all its text adventures to a new platform simply by writing a...

 format as freeware

Freeware

Freeware is computer software that is available for use at no cost or for an optional fee, but usually with one or more restricted usage rights. Freeware is in contrast to commercial software, which is typically sold for profit, but might be distributed for a business or commercial purpose in the...

. The game won the 1997 Interactive Fiction Competition

Interactive Fiction Competition

The Interactive Fiction Competition is one of the best known of several annual competitions for works of interactive fiction. It has been held since 1995. It is intended for fairly short games, as judges are only allowed to spend two hours playing a game before deciding how many points to award it...

, and went on to also win that year's XYZZY Award for Best Puzzles and XYZZY Award for Best Individual Puzzle. It gained plaudits for its famous "language puzzle".