San Andreas (3D World)

The State of San Andreas is a state in Grand Theft Auto: San Andreas. It is primarily based on the states of California and Nevada, with some areas (particularly desert and forest areas) based on parts of Arizona. The state consists of three cities,San Fierro,Los Santos and Las Venturas. 
San Andreas appears to be comprised entirely of islands, as the state is surrounded by water; however, several maps throughout the state depict the northern regions (Tierra Robada and Bone County) connecting to the mainland (despite this, it is possible to completely circumnavigate the state by boat). The in-game San Andreas is square-shaped and its area is estimated to be 33 square kilometres in size (12.7 square miles), the largest setting in the Grand Theft Auto series up until Grand Theft Auto V's rendition of part of the same state.