The playable map size of Elden Ring, referring to the explorable land in the game world known as the Lands Between, is estimated to be about 13.5 square kilometers. This is considerably smaller than some widely cited figures that include all map areas and underground zones.

• The total area of the map including above ground, underground, sea, and unused space is around 88 square kilometers, potentially up to 110 square kilometers if underground areas are fully counted.
• After excluding unplayable areas such as sea, underground parts that are not accessible, and the surrounding unused map space, the explorable, playable land area is about 13.5 square kilometers.
• For comparison, the initially reported figure of 79 square kilometers includes a lot of non-playable terrain and is close to the size of a small country or large city area.
• Elden Ring's map is larger than some classic games like Skyrim but smaller than other vast open worlds when considering only the playable areas.

In summary, Elden Ring's playable world size is roughly 13.5 square kilometers, while the total map area (including non-playable zones) is much larger, close to 88 to 110 square kilometers.