Mariah Carey will soon be replacing Kate Upton as the new face of the 'Game of War: Fire Age' series, a freemium mobile MMO strategy video game developed and published by Machine Zone.

Latin Post reports that TMZ has claimed sources telling the website that the "Hero" singer and 45-year-old Latina superstar has already signed on a seven-digit deal to take over from the 23-year-old Upton. According to reports, the singer/ song writer is already ready to commence shooting a 30-second commercial spot to promote the mobile game.

In addition to the 'Game of War,' the "Without You" hitmaker is also scheduled to be play a key role in several other promotional campaigns, the first of which is being directed by the creator of 'Terminator Genisys.'

It is expected that 'Game of War' will be grossing no less than $1 million per day in terms of revenue. It is reported that executives needed to be persuaded to have Carey on board and, according to rumors; they need to be convinced that her musical talents may possibly add even additional dimension for the online game.

No doubt, it is a hectic time for the Latino superstar, who recently commenced her artist-in-residence Las Vegas show at The Colosseum at Caesars Palace. Earlier, in January, Carey told talk show host Ellen DeGeneres that she was planning to make the entire 18 of her former No. 1 hits a part of her regular performance routine.

Carey told DeGeneres, "I have to hope that the fans will enjoy this, because I'm going to be performing, which was kind of inspired by my album Number 1," adding, "Hopefully, other people will enjoy this. I've never done this before."

According to the report, it is an excellent time for her to start now, as her fellow Vegas residency performer Britney Spears is supposedly being paid $30 million for her "Piece of Me" performance, which continues till 2017. At the same time, it is being rumored that Celine Dion is earning as much as $476,000 per show until she postponed her tour recently to care for ailing husband René Angélil, who is struggling with persistent health issues.