<P> The third challenge requires one to play Halliday's favorite Atari 2600 game, in a castle on Planet Doom, which Sorrento has protected with a force field . Attesting to Sorrento's nature, Parzival recruits countless OASIS players to help the rebels attack the IOI forces around the castle . Art3mis breaks the force field, allowing Parzival to reach the console, but Sorrento activates the Cataclyst, a bomb that wipes all the avatars off Planet Doom . However, due to having won a coin from the Archive's Curator earlier, Parzival gets an extra life, and proceeds to play through Adventure to find its Easter egg, and is awarded the last key . Opening the gate, he is greeted by Anorak and given a contract to sign . Parzival recognizes it as the same contract Morrow signed to turn over his part of Gregarious, and refuses . Anorak reveals himself to be Halliday, and that the contract was the final test to make sure Parzival would not have the same regrets as Halliday did with Morrow . Parzival is given the Golden Egg that controls OASIS . </P> <P> In the real world, Sorrento and Zandor fail to stop Parzival before he wins, and are arrested for the bombing, and IOI is dismantled as a company . Wade decides to run OASIS alongside the other High Five . Morrow, revealed to have been the Curator, offers his services to Wade . Wade and the others agree to shut down the OASIS twice a week for everyone to spend more time to improve the real world, while he and Samantha move into an apartment together . </P> <Ul> <Li> Tye Sheridan as Parzival / Wade Watts, a Gunter who wishes to win the Quest so he can leave the stacks . </Li> <Li> Olivia Cooke as Art3mis / Samantha Cook, a famous Gunter who works with various allies to ensure the OASIS is kept free and out of the hands of IOI . </Li> <Li> Ben Mendelsohn as Nolan Sorrento, the recently appointed CEO of Innovative Online Industries, who seeks full control over the OASIS . He leads the Sixers, an army of indentured servants in the OASIS . </Li> <Li> Lena Waithe as Aech / Helen Harris, a Gunter and long - time friend of Wade's who works as a robot and vehicle mechanic in the OASIS . </Li> <Li> T.J. Miller as i - R0k, a freelance weapons and magic item dealer and bounty hunter, who is often employed by IOI . </Li> <Li> Simon Pegg as Curator / Ogden Morrow, a co-creator of the OASIS, who eventually left the company due to personal reasons . He harbors a concern about how many people have developed an unhealthy dependency on the game . </Li> <Li> Mark Rylance as Anorak / James Halliday, the deceased co-creator of the OASIS, who includes an Easter Egg hidden in the OASIS after his passing that grants control over the OASIS to its winner . </Li> <Li> Philip Zhao as Sho / Zhou, a Gunter and one of the "High Five", and 11 years old in reality . </Li> <Li> Win Morisaki as Daito / Toshiro, a Gunter and one of the "High Five". </Li> <Li> Hannah John - Kamen as F'Nale Zandor, the head of IOI's operations in the physical world, as well as their indentured servitude programs . </Li> </Ul> <Li> Tye Sheridan as Parzival / Wade Watts, a Gunter who wishes to win the Quest so he can leave the stacks . </Li>

Who plays the female lead in ready player one