From the Bethesda blog:
Today’s Inside the Vault is about senior designer, Kurt Kuhlmann. Kurt has worked on a few Elder Scrolls titles including Oblivion. Much of how we implement quests in the Construction Set, especially when we transitioned to Oblivion from Morrowind, was conceived by Kurt. He once made a web version of the board game, Lord of the Rings: The Confrontation, after we became addicted to it in the office.[…]
Kurt: What would you say is your personal favorite game of all time?
That’s a tough one. I’m going to confine my answer to video games (board games it would probably be Titan). And basing “favorite” on “number of hours spent”, I’d have to go with Civilization in all its forms, closely followed by Company of Heroes (my current favorite) and maybe the various Ultimas (which sucked up many of my teenage hours).