This game is a version of UNIX Rogue 5.4.
Early in 1983, Michael Toy, Ken Arnold, and Glenn Wichman released an updated Rogue with some major changes from version 5.2. Some game mechanics and items were adjusted. Monster names borrowed from Dungeons & Dragons were replaced with original creations. Releases from this series are referred to as "V5", to distinguish them from the older V4 series.
The last V5 release, called Rogue 5.4, appeared in March 1985. The developers then worked on ports for DOS, Macintosh, Atari, and other consumer platforms of the era. These games were commercially distributed by Epyx, and they were all based on UNIX Rogue 5.4, though each had unique features.
In 1999, Ken Arnold located a copy of the 5.4 source code and uploaded it to SourceForge. The Roguelike Restoration Project updated this version to run on modern systems, fixing several bugs in the process. The RRP worked on Rogue V5 from about 2005 to 2007, calling the last release 5.4.4, though further small fixes were added afterward.
The Roguelike Gallery began maintaining the game in 2010, and has fixed some bugs since then.