The Elder Scrolls II Daggerfall is an open world single player action rpg by Bethesda Softworks. It was released in 1996 on the PC. It's the second entry in the popular Elder scrolls series, and the first Elder Scrolls game to claim an M rating.
Daggerfall, like the other Elder Scrolls games, is open ended. No quest is required. You can use one of the premade classes, or make your own. There is a spell creation system, an equipment enchantment system, and a political system. The game takes place on Tamriel, a fictional continent.