The Elder Scrolls' weird relationship with expansions began a full decade before the horse armour DLC, in the form of a 16-quest addon to Daggerfall exclusive to one US retailer

The Elder Scrolls has a rollercoaster history with expansions and DLC. Bethesda's fantasy RPG series has produced some of gaming's most beloved supplementary adventures (such as Bloodmoon and Shivering Isles) and some of its most notorious DLC fiascos (horse armour). But the series' affiliation with addons stretches farther back in time than any of these releases—all the way back The Elder Scrolls 2: Daggerfall, in fact.

When Daggerfall launched in September 1996, it had an expansion out of the gate.