HBO's hit drama series "Game of Thrones" may be in the run for a seventh season.

The stars of the show are signed through only six seasons, but Hollywood Reporter learned that they have completed an extensive renegotiation of their contracts, including an option for a seventh season.

The cast of the show is set to receive raises for the last two seasons (and the possible Season 7) that are so big that it will make them among the highest paid cast members on cable TV.

Based on the best-selling books by George R. R. Martin, "Game of Thrones" was guaranteed through Season 6 after contracts were renewed back in April. Season 7 is still up in the air, but given the amount of fans the show has it is most likely to get the green light.

All actors in the show may receive raises, but the top actors will get the highest raises and vice versa. Raises for everyone, however, are expected to be significant being that "Game of Thrones" is the biggest show on HBO.

The series has one of the largest casts on TV. HBO's employees are on a tier system, where the stars on the top tier gets the most compensation. The top, or A tier, includes Kit Harington, Peter Dinklage, Lena Headey, Emilia Clarke and Nikolaj Coster-Waldau.

The B tier is said to include Natalie Dormer, Sophie Turner, Maisie Williams and a few others, who are paid less than the top A tier.

But there is no guarantee that an actor will live long on the show. "Game of Thrones" is notorious for killing off characters and the book series is still being written.

"Game of Thrones" being based on Martin's books means that, depending on what Martin writes next, the stars may lose their jobs and their new big paychecks before Season 7.

Season 5 of "Game of Thrones" premieres in April 2015.

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