Spider-Man plays a pivotal role in the Civil War comic and is the reason for multiple changes throughout the story. He won’t play as essential a role in the upcoming movie due to the fact that Marvel studios didn’t have the rights yet when the story was finished and production was already underway.
Having said that, Spidey will still play a part, we just don’t yet know how big and on who’s side he’ll be on. While Spider-Man eventually ended up on Captain America’s side in the comics, he started on Iron Man’s. I’ll be interested to see how they deal with that in the film. So far the only thing they have said is that he doesn’t come into play until after sides are chosen (via), and that he forms a friendship with one character in particular. Who that is though they aren’t saying.
Who’s side do you think he’ll end up on?