Grand Theft Auto: San Andreas: Orange County is a mod for Grand Theft Auto: San Andreas which adds an island east of Los Santos based on Orange County, which in reality is directly southeast of Los Angeles. Currently, the mod has only begun creation.

EDIT: Version 0.1 is to be released as soon as it's done uploading onto GTA Garage!

EDIT August 16: After a long time, my mod is finally available!