The creators of South Park have signed a new deal with ViacomCBS bosses, worth almost US$1 billion, to expand their cartoon world.

One of the most lucrative in television history, the new US$900 million ($1.1 billion) deal will last over six years and include the series and a second South Park movie, according to Bloomberg.

There are also tie-ins to ViacomCBS’ new streaming service, Paramount+.

Insiders claim creators Trey Parker and Matt Stone have been working on a South Park film for some time, and it is expected to be released on the streaming platform before the end of the year.

It will serve as the follow-up to the pair’s 1999 movie, South Park: Bigger, Longer & Uncut.

“We did a South Park movie in 1999, and we’ve never done another one because the show has been so satisfying,” Stone told Bloomberg. “Now we’re older, and the idea of what streaming movies can be is pretty promising.”

As part of their new deal, Parker and Stone will also create six more seasons of South Park and a total of 14 films.

Stone and Parker plan to use the money from their deal to create a documentary series and a marijuana label, along with a South Park video game, according to reports.

“South Park pays the bills and then some,” Stone added. “Trey and I have used that to pay for other stuff we want to do.”