505 Games and Warner Bros Interactive Entertainment have become the latest big name publishers to back the GMAs.
505 is Silver Sponsor and is hosting a drinks reception at the event to highlight new flight sim IL-2 Sturmovik: Birds of Prey.
Marketing director Alison Mitchell said: It was great to be involved in the GMAs last year and we're delighted to be back this year.”
Meanwhile Warner's Scribblenauts is sponsoring the Best Games Blog category.
Scribblenauts has been championed by our media partners since E3. This is our opportunity to thank them for their hard work and support throughout the year”, said Spencer Crossley, sales and marketing director at Warner Bros Interactive Entertainment.