United Kingdom, Aug. 28 -- Grand Theft Auto VI will represent a significant evolution of Rockstar Games' blockbuster franchise, with Rockstar North co-studio head Rob Nelson describing the upcoming sequel as a "step forward in all respects".

Speaking to IGN, Nelson explained that Rockstar's biggest challenge with Grand Theft Auto VI was finding the balance between introducing new ideas while preserving the elements that made previous entries so popular.

Nelson said: "I think the challenge for us on this game is the same as it is on any new game for us.

"How do we evolve and build upon the good things we have done before in all the ways these things need to evolve, but at the same time ensure that the game still has everything that made...