The Elder Scrolls: Chapter II Daggerfall Unity for free in the GOG Cut version. Most likely, the game will remain free forever just like the original version of the game – The Elder Scrolls II: Daggerfall.
TESII: Daggerfall Unity – GOG Cut is a special version of the game released by GOG.com. The game is enhanced with more than 30 mods that are already implemented by default. Daggerfall is an open-world RPG adventure game released in 1996 by Bethesda Softworks as the second installment in The Elder Scrolls series.