Might & Magic 6, the Mandate of Heaven.
I have multiple games going, each trying a different tact. Even though I have owned this game since 1998 or so, I have never completed it.
It’s too much fun starting out with new characters, and the end game is tedious—the interior of the pyramid takes forever to traverse, and it’s one of those “pull the lever in this chamber to open the door in a chamber on the opposite side of the pyramid”.