Update: Now that Ready Player One has come to Blu-ray, DVD, and Digital, let’s take a look back at all the changes that were made from book to movie.

Steven Spielberg’s adaptation of Ready Player One, and the myriad Easter eggs therein, has finally hit theaters, and blessedly, is really, really fun.

Fans of the book should be delighted with how the OASIS is realized but, as with any adaptation, some facets of Ernest Cline’s world are significantly changed in the jump to the big screen. Watch the video above or read below to see what we’re calling the five most noteworthy book vs. movie changes below.

Full spoilers follow, for both the book and film adaptation of Ready Player One.

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Source: IGN.com Ready Player One: The 5 Biggest Book-to-Movie Changes