In 1994, Bethesda released a game to begin their series of The Elder Scrolls. Beginning with Arena, Elder Scrolls brought the player into a first person RPG with an open environment to explore. Building on that platform, The Elder Scrolls II: Daggerfall was published in 1996, giving the player a larger world to explore, skill system, and a 3D world. More recent titles include The Elder Scrolls III: Morrowind in 2002 and The Elder Scrolls IV: Oblivion in 2006.
For the 15th anniversary, Bethesda has released Arena and Daggerfall as free downloads, both of which require an emulator such as DOSBox to run on newer systems.
Download: The Elder Scrolls: Daggerfall (148mb)
Download: The Elder Scrolls: Arena (9mb)