Ultima Underworld 1 & 2, Populous and the text adventures set in the realm of Quendor (Zork 0, 1, 2, 3, Beyond Zork, Enchanter, Sorcerer, Spellbreaker, and Wishbringer)
The first set of games set in a shared world IIRC. The Zork games, the Enchanter games and Wishbringer were all in different parts of the world and had some of the coolest puzzles (especially the time travel ones).
The first set of games set in a shared world IIRC. The Zork games, the Enchanter games and Wishbringer were all in different parts of the world and had some of the coolest puzzles (especially the time travel ones).