It has been 25-years since Bethesda first launched The Elder Scrolls: Arena all the way back in 1994. A lot has happened since then, including the release of games set in Morrowind, Cyrodiil, and Skyrim, and now fans who've enjoyed touring the studio's RPG series will get to take another adventure, and this one's on the house.
The Elsweyr Prologue is a free content update for The Elder Scrolls Online, and while it's linked to the Elsweyr update, anyone can play the prologue because it's available as part of a free-to-play event linked to the base game that's running from March 28 through until April 3 (you can find details here about how to access the content). There's also a sale on TESO-related content if you feel so inclined.