Board Thread:General Discussion/@comment-50.135.236.134-20140226125517/@comment-3076045-20140320145115

And in case anyone is still wondering, here is a quick breakdown of the number of games in the series per province:

Argonia / Black Marsh: Arena, Stormhold, Online (3)

Cyrodiil: Arena, Oblivion, Online. (3)

Elsweyr: Arena, Online (2)

Hammerfell: Arena, Daggerfall, Shadowkey, Redguard and Online (5)

High Rock: Arena, Daggerfall, and Online. (3)

Morrowind: Arena, Morrowind, Online (3)

Skyrim: Arena, Skyrim, Shadowkey, Dawnstar and Online. (5)

Summerset Isles: Arena, Online. (2)

Valenwood: Arena, Online (2)

Orsinium: None. It is not considered a province.

Realms of Oblivion:

(Just for a point of interest)

- Oblivion. (via Mehrunes's Obivion Gates)

- Skyrim (Vaermina's Dreamstride)

- Online. (A number of quests)

(and Daggerfall allowed you to visit Sheogorath in Aetherius).