Beneath Apple Manor is an early roguelike

Roguelike

The roguelike is a sub-genre of role-playing video games, characterized by randomization for replayability, permanent death, and turn-based movement. Most roguelikes feature ASCII graphics, with newer ones increasingly offering tile-based graphics. Games are typically dungeon crawls, with many...

 game released by Don Worth for microcomputer

Microcomputer

A microcomputer is a computer with a microprocessor as its central processing unit. They are physically small compared to mainframe and minicomputers...

s, which had a Lo-Res Apple release in 1978 (through The Software Factory) and high-res multi-platform releases in 1982 and 1983 (through Quality Software

Quality Software

Quality Software is a defunct software design company that published games for Apple II and Atari 800 computers in the late 1970s and early 1980s...

). The goal is to obtain a Golden Apple on the bottom floor of the dungeon. There are 10 rooms per level in the low-res version, and 5 in the high-res version. The high-res versions may be played in low-res/text mode, thereby gaining this increase in level size.

Despite being included in the "roguelike" genre, Beneath Apple Manor actually predates Rogue

Rogue (computer game)

Rogue is a dungeon crawling video game first developed by Michael Toy and Glenn Wichman around 1980. It was a favorite on college Unix systems in the early to mid-1980s, in part due to the procedural generation of game content. Rogue popularized dungeon crawling as a video game trope, leading...

(created in 1980) by two years. The creator claims that neither he nor the implementors of Rogue knew about the other game.