Grand Theft Auto 5 may have only launched two weeks ago, but Rockstar already has "some ideas" about where to take the next game.

"We've got about 45 years worth of ideas we want to do," Rockstar North producer Leslie Benzies told Develop, discussing where the series could head in the future. "We don't know what GTA 6 will be, but we've got some ideas."

Rockstar North's immediate focus is on stabilising the launch of GTA Online, which went live earlier this week, and developing DLC for GTA 5.

"GTA Online is the focus right now," continued Benzies. "There ain't no rest between finishing 5 and then Online. Plus we have some other things - stuff, DLC, I don't know how to describe it exactly - that we'd like to do, and we'll pick the right ones."

GTA 5 is believed to be the fastest-selling entertainment property in history, generating over $1bn in revenue within just 72 hours.