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.