Deep inside Archaide, Parzival discovers a place he didn't know existed: Happytime Pizza, a recreation of Halliday's childhood pizza joint.
A variety of arcade games have been recreated inside, including a Pac-Man machine with a high score of 3,333,350 points. That's ten points shy of the fabled perfect score.
Wade realizes he's found an Easter egg. Not Halliday's legacy egg, but a different one. He attempts to play a perfect game of Pac-Man. Halliday's game was the fastest ever, just under four hours. It looks like that record's been broken by this guy, who finished a perfect game in 3.5 hours in January 2012.
When he plays the perfect game, Parzival is able to pick up a quarter that had previously been stuck to the machine. He has no idea what the magic quarter does, but you can bet he's gonna hang onto it.
After the game, he has an e-mail from Aech, who has also claimed the Jade Key. Attached is an image of the instruction manual for the classic PC game Zork.
Wade knows that the planet Frobozz is home to a detailed recreation of Zork, so off he goes.