Dungeon Lore is a 3d greyscale Dungeon Crawler released by Ted Lowery in 2001. The website is gone, but still available on wayback, last updated in 2010.
The zip contains a normal and cracked file, and a readme and license txt.
Test and working on my Zodiac.
From the website -
Dungeon Lore is a fantasy role playing game. The object of the game is to take an adventurer through a dungeon, solving puzzles and adventures that will increase his or her powers, talents and abilities, and in the end, solve a central mystery that will emerge gradually as you explore this world.