Overview
Hack is a 1984 roguelike video game that introduced shops as gameplay elements and expanded available monsters, items, and spells. It later became the basis for NetHack.
History and development
Hack was created in 1982 by Jay Fenlason with the assistance of Kenny Woodland, Mike Thome, and Jonathan Payne, while students at Lincoln-Sudbury Regional High School. A greatly extended version was first released on Usenet in 1984 by Andries Brouwer. Brouwer continued to work on Hack until July 1985. Don Kneller ported the game to MS-DOS and continued development there. Development on all Hack versions ended within a few years. Hack descendant NetHack was released in 1987.
Hack is still available for Unix, and is distributed alongside many modern Unix-like OSes, including Debian, Ubuntu, the BSDs, Fedora, and others. Hack has also been ported to a variety of non-Unix-based platforms. NetHack is available for almost all platforms which run Hack. There is one exception: Hack is available, but NetHack is unavailable, for the Game Boy Advance.
Gameplay
From Wikipedia (CC BY-SA 4.0).