From Wikipedia:
Ready Player One is an upcoming American cyberpunk science fiction action-adventure film co-produced and directed by Steven Spielberg, written by Zak Penn and Ernest Cline, and based on Cline’s 2011 novel of the same name. The film stars Tye Sheridan, Olivia Cooke, Ben Mendelsohn, T. J. Miller, Simon Pegg, and Mark Rylance.
The film is set in a near-future dystopian Earth, where the population spends most of its time in an interconnected virtual space called the OASIS. When the founder of OASIS dies and bequeaths ownership of OASIS to the first person to find a hidden treasure within OASIS by playing games and solving puzzles, a race ensues between a young man and his friends, and a large corporate entity that wants to control OASIS for themselves.