Marathon ... made by Bungie, which was bought by Microsoft so they could have an exclusive for the Xbox (Halo). The first and third (Marathon Infinity) were Mac exclusives for many years ... Marathon 2 was released on Windows, too.
Dark Castle ... made by Silicon Beach Software (makers of SuperPaint and SuperCard), which was bought by Aldus. It was a side-scrolling puzzle game (mostly timing related); you moved with the keyboard, while you aimed with your mouse. It's believed to be responsible for WASD movement. There was a sequel made for MacOSX (Return to Dark Castle)
OrbQuest ... an adventure game in the style of zelda, but with randomization in the replay. (I don't know if it would quite qualify as rogue-like).
And there were some that were just strange ... like Citadel. It had a strange combat system where you looked at the room from above, and your characters had rings around them to show their attack distance, and you dragged them around to attack the monsters. Character creation was strange, too -- you picked the occupation of the parents, and then what to do as you grew up, and that affected your stats by the time that you were adventuring age.
And there were games that started on the Mac, and then got ported to Windows, such as Myst.
And there was MacSoft, a copy that specialized in porting games to the Mac. There used to be lots of games that were released shortly after the Windows versions (Warcraft 2, Civilization, SimCity, etc.)
Maybe I'm imagining it, but it seemed me that it was around the time of MacOS X that companies stopped developing many games for the Mac ... although that was also about the time when the XBox and PS2 were out, so maybe they took the attention.