Grand Theft Auto V

Grand Theft Auto V, also known as GTAV is a game developed by Rockstar North and the fifth main game in the Grand Theft Auto series.

Production of Los Santos Underground
To make it easier to understand, Los Santos Underground exists in a bubble universe off of the Grand Theft Auto HD universe. As the major events of the show take place before the events of Grand Theft Auto V or Grand Theft Auto Online, LSU's plot overrides these plots in the show's universe.

Much of the LSU universe is taken directly from the GTA HD universe, with minor changes. Location names, companies, objects, among other things are exactly the same as they are in the game. However, some locations used for the show have been renamed or re-purposed.

In addition, a lot of the plot of the show is designed around what would actually be possible to do in-game.