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The Elder Scrolls is an IP with one hugely open landscape, a non-class skill system, multiple factional advancement and a persistent world.
The Elder Scrolls Online has many small, phased and instanced zones, a strict class system, single faction advancement and an unchaging world.
I don't understand. Aside from some of the names in the Elder Scrolls turning up in the TESO, how are these two games related at all?