<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 . Parzival recruits other OASIS players to help the rebels attack the IOI forces around the castle . Art3mis deactivates the force field, allowing Parzival to reach the console, but Sorrento activates the Cataclyst, a bomb that kills all the avatars on Planet Doom . However, due to having won a coin from the Archive's Curator earlier, Parzival gets an extra life, proceeding to play through Adventure to find its Easter egg; he is awarded the last key . Opening the gate, he is greeted by Anorak and given a contract to sign; however, he recognizes it as the same contract Morrow signed to turn over his part of Gregarious and refuses . Anorak changes forms to be Halliday, revealing that the contract was the final test to make sure Parzival would not make the same mistakes he did . Parzival is given the Golden Egg and control of OASIS . </P> <P> In the real world, Sorrento and Zandor fail to stop Parzival before he wins; they are quickly arrested for the bombing . Morrow, revealed to have been the Curator, offers his services to Wade; he gladly accepts . Wade decides to run OASIS with the other High Five, agreeing to ban IOI from forcing people into servitude and to shut down the OASIS twice a week for everyone to spend more time in the real world . Meanwhile, he and Samantha move into an apartment together . </P> <Ul> <Li> Tye Sheridan as Parzival / Wade Watts, a Gunter who wishes to win so he can leave the stacks . </Li> <Li> Olivia Cooke as Art3mis / Samantha Cook, a well - known 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 CEO of Innovative Online Industries who seeks full control over the OASIS . </Li> <Li> Lena Waithe as Aech / Helen Harris, a Gunter and long - time friend of Wade's who works as a mechanic in the OASIS . </Li> <Li> T.J. Miller as i - R0k, a freelance dealer and mercenary often employed by IOI . </Li> <Li> Simon Pegg as Curator / Ogden Morrow, a co-creator of the OASIS, who eventually left the company . He is concerned 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 reveals 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". </Li> <Li> Win Morisaki as Daito / Toshiro, a Gunter and one of the "High Five". </Li> <Li> Hannah John - Kamen as F'Nale Zandor, IOI's head of operations in the physical world and for their indentured servant programs . </Li> </Ul> <Li> Tye Sheridan as Parzival / Wade Watts, a Gunter who wishes to win so he can leave the stacks . </Li>

Who plays the character irok in ready player one