In a gesture of generosity, Bethesda Softworks has made its 1996 sandbox RPG The Elder Scrolls II: Daggerfall completely free. Weighing in at a relatively paltry 148 MB, the title can be downloaded from the publisher's official website.
A technological showpiece of its time, Daggerfall laid the groundwork for open-roam, open-world RPGs, sporting an estimated 161,600 square kilometres of exploration area -- a figure that no other Elder Scrolls title can match. To be fair, most of the game's terrain and surrounding landscape was randomly generated. Just be warned: the gameplay and associated interfaces will feel rather archaic to those who grew up on Morrowind and Oblivion.
As the title was developed with the MS-DOS operating system in mind, it will not run natively on recent Windows versions. Those looking to experience a blast from the past will have to run it under a DOS emulator such as DOSBox.