The Ready Player One Easter Egg hunt

I found the game.  I don't know what I'm doing -- it seems to be a lot more difficult than I was expecting.  (I don't know why I was expecting an easy game.  Not like Nintendo Hard is a thing or anything, and Atari can easily be just as bad.) For those unfamiliar with the game, Ready Player One is a book by Ernest Cline, and upon release of the paperback he revealed that there's a secret Atari game at a URL hidden somewhere in the book.  I believe I have found that URL.  I mean, I'm playing the game, anyway.

Winning the game means getting access to the next gate -- a way up to the next level in a competition to win a Delorian.  I need a new car.

I hope to beat it today.  Right now, I'm working on a map of the levels so I can navigate effectively.  (Also, does anyone have a clue what those squid-shaped things are?)