A while back I wrote a review of the book Ready Player One. It will not be long now until we get the movie adaptation.
You can see the trailer for it here: https://www.youtube.com/watch?v=LiK2fhOY0nE
I enjoyed the trailer, but was disappointed that it did not give any hint of the story. The action was good and we were given a flood of the visual effects. We are given the most basics of the world. The problem is anyone not familiar with the book will not know what the movie is about.
I also found it interesting that most of what we see in the trailer does not appear in the book (unless I am misremembering something). While I loved those scenes, I am wondering how they fit into it all. I have never been a purest when it comes to the source materiel. I've seen great adaptations done that have taken great liberties from the original souces. So that is not bothering me, I just want to see more so I know the story is there.
No matter what, Ready Player One will undoubtedly have more Easter eggs in it than any other movie. You couldn't do the movie right without that. The book had so many geek/pop culture references to begin with. Any movie of it would have to go beyond that with all they can do in the background now days. The only limit would be making sure they have the rights to do it and with a movie like this, being produced by Spielberg, most of those companies are going to be fine with allowing it.
My predictions are that when all is said and done, we will be talking hundreds, is not thousands of Easter eggs. It most likely will be a movie you have to watch over and over again just to catch half of them. Now they just need to make sure it is watchable enough for that to be doable.
With the trailer alone, we most likely already have people setting up web pages to point out the few dozens Easter eggs it that alone. And each new trailer from here on out will most likely just add to that list.