"Beneath Apple Manor is an early roguelike game released by Don Worth for microcomputers, which had a Lo-Res Apple release in 1978[1] (through The Software Factory) and high-res multi-platform releases in 1982 and 1983 (through Quality Software). 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 (created in 1980) by two years.[2] The creator claims that neither he nor the implementors of Rogue knew about the other game."
Source: Wikipedia, "Beneath Apple Manor", available under the CC-BY-SA License.