The union leading the video game performers' strike says multiplayer games might be first affected.
The union has been in talks with big games studios, like Activision and Walt Disney, for 18 months.
Screaming fans greeted the Hollywood heartthrobs at the world premiere of Dune: Part Two in London.
The ratification formally ends the longest strike battle in Hollywood history.
The US actors' union says its national board has voted to back the agreement with Hollywood studios.
The end of the actors strike means that production on a number of TV shows and films will resume.
After striking nearly four months, the union has struck a historic deal with Hollywood studios.
Actors turned out on the day a tentative agreement was reached in the actors' strike.
Major films and TV shows will resume work after a four-month impasse that paralysed the industry.
